#include <bits/stdc++.h>
using namespace std;
long long k, m = 100;
void in(long long &x) {
  long long y = 1;
  char c = getchar();
  x = 0;
  while (c < '0' || c > '9') {
    if (c == '-') y = -1;
    c = getchar();
  }
  while (c <= '9' && c >= '0') {
    x = (x << 1) + (x << 3) + c - '0';
    c = getchar();
  }
  x *= y;
}
void o(long long x) {
  if (x < 0) {
    putchar('-');
    x = -x;
  }
  if (x > 9) o(x / 10);
  putchar(x % 10 + '0');
}
int main() {
  in(k);
  cout << 25;
  return 0;
}
