#include<bits/stdc++.h>
using namespace std;

int main()
{
    int a,b;
    string s;
    cin>>a>>b;
    while(a>0)
    {
        int o=a%b;
        if(o>=10){
            s+='A'-10+o;
        }else{
            s+='0'+o;
        }
        a/=b;
    }
    reverse(s.begin(),s.end());
    cout<<s;
    return 0; 
}

$CCF4302$