#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<int>;
using si = set<int>;
using vll = vector<ll>;
int main() {
  ll n;
  scanf("%lld", &n);
  ll a = pow(5, n);
  printf("25");
  printf("\n");
  return 0;
}
