View Code of Problem 80

#include<cstdio>
#include<cstdlib>
#include<cmath>
#include<iostream>
#include<algorithm>
using namespace std;
int main(){
		int n;
		while(scanf("%d",&n)!=EOF&&n!=0)
		{
			int s=0;
			for(int i=1;i<=n;i++)
			{
				s=(s+3)%i;
			}
			printf("%d\n",s+1);
		}
	return 0;
}