#include<bits/stdc++.h>
using namespace std;
int main(){
	int a;
	cin>>a;
	if(a%3==0 and a%7==0){
		cout<<2;
	}else if(a%3==0 or a%7==0){
		cout<<1;
	}else{
		cout<<0;
	}
	return 0;
}//我可是大好人