View Code of Problem 20

#include<cstdio>
#include<iostream>
#include<algorithm>
#include<cmath>
#include<cstring>
#include<vector>
#include<map>
#include<string>
#include<set>
using namespace std;
int main(){
    int n;
    while(cin>>n)
    {
        //cin>>n;
        if(n%3==0)cout<<"No"<<endl;
        else cout<<"Yes"<<endl;
    }
	return 0;
}