2 solutions

  • 0
    @ 2026-7-24 11:30:45 
    using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3; cin>>s1>>s2>>s3;
	if(s1!="ABC"&&s2!="ABC"&&s3!="ABC")
	{
		cout<<"ABC";	
	}
	if(s1!="ARC"&&s2!="ARC"&&s3!="ARC")
	{
		cout<<"ARC";	
	}
	if(s1!="AGC"&&s2!="AGC"&&s3!="AGC")
	{
		cout<<"AGC";	
	}
	if(s1!="AHC"&&s2!="AHC"&&s3!="AHC")
	{
		cout<<"AHC";	
	}    
}``````
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