View Code of Problem 80

#include<stdio.h>
#include <math.h>
#include <string.h>
#include <ctype.h>
#include <math.h>
#define Max 100
int main()
{
	int n,i,m=3;
	while(scanf("%d",&n)!=EOF)
	{
		int s=0;
		if(n==0) break;
		for(i=2;i<=n;i++)
		  s=(s+m)%i;
		  
		printf("%d\n",s+1);
}
	return 0;
}