#include <bits/stdc++.h> using namespace std; int n; signed main() { cin >> n; // n = 6; int x = 1, ans = n * n / 2; for (int i = 2; i * i <= n; i++) { if (n % i == 0) { int j = n / i; ans = min(ans, j * j / 2 * i * i); swap(i, j); ans = min(ans, j * j / 2 * i * i); swap(i, j); } } cout << ans << '\n'; }

chessboard.cpp: In function 'int main()':
chessboard.cpp:7:6: warning: unused variable 'x' [-Wunused-variable]
    7 |  int x = 1, ans = n * n / 2;
      |      ^