#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
	cin>>n;
	if (n<1.3) cout<<60<<endl;
	else cout<<120<<endl;
	return 0;
} 
/**************************************************************
	Problem: 1037
	User: xiaojingxuan
	Language: C++
	Result: Wrong Answer
****************************************************************/