#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a[5]={0,1,2,3,4}; //初始化 
	int n=4;
	do{
		for(int i=1;i<=n;i++)
		{
			cout<<a[i]<<" "; 
		}
		cout<<endl;
	}while(next_permutation(a+1,a+n+1)); //得到a[1]到a[n]的下一个排列 
	return 0;
}