#include <bits/stdc++.h>
using namespace std;
const int mod = 1e9 + 7;
long double My_PI = asin(1.0) * 2;
int main() {
  cin.tie(NULL);
  std::ios_base::sync_with_stdio(0);
  cout.setf(ios_base::fixed);
  cout.precision(10);
  long long n;
  cin >> n;
  cout << 25;
  return 0;
}
