#include<bits/stdc++.h>
using namespace std;
int main(){
	int i=0,a,d=0;
	cin>>a;
	d=a*60;
	i=d/a;
	cout<<i;
} 
/**************************************************************
	Problem: 1317
	User: huxuanchen
	Language: C++
	Result: Wrong Answer
****************************************************************/