#ifndef MYDEBUG #include <bits/stdc++.h> #define err(...) #define errs(...) #endif using namespace std; void Calc(); #define ALL(a) begin(a),end(a) #define RALL(a) rbegin(a),rend(a) typedef long long ll; typedef unsigned long long ull; signed main() { cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(15); cin.exceptions(istream::failbit | istream::badbit); Calc(); cout.flush(); return 0; } struct Scanner { template<class A = string>static A Next() { A a; cin >> a; return a; } static string Line() { string s; getline(cin, s); return s; } template<class A = int> static vector<A> Array(int n) { vector<A> a(n); for (A& i : a) i = Next<A>(); return a; } template<class A = int> static vector<A> Array(int n, A add) { vector<A> a(n); for (A& i : a) i = Next<A>() + add; return a; } static int Int() { return Next<int>(); } template<class A> A operator-(const A &a) { return Next<A>() - a; } template<class A> Scanner& operator>>(A &a) { a = Next<A>(); return *this; } template<class A> operator A() { return Next<A>(); } operator bool() { return !!cin; } }; Scanner in; /*---------------------------------------------------------------------*/ void Calc() { long long n = in; cout << 316 + (n - 1) * 52 << endl; }