题解

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,cnt=0;
	cin>>n;
	for(int i=0;i<=9;++i)
	{
		for(int j=0;j<=9;++j)
	    {
		for(int k=0;k<=9;++k)
	    {
		    for(int v=0;v<=9;++v)
			{
		if(i!=j and i!=k and i!=v and j!=k and j!=v and k!=v){
			cnt++;
			if(cnt==n+1)cout<<i<<" "<<j<<" "<<k<<" "<<v;
				}
				}
			}
		}	
	}
}