#include<stdio.h>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <algorithm>
#include <sstream>
#include <iostream>
#include <string>
#include <stdio.h>

using namespace std;

int main() {

	long long N;
	cin >> N;

	long long ans = 316;

	cout << ans + (N-1)*52<< endl;

	return 0;
}