Giúp mik vs mn!

(C++ ạ)

Nhanh ạ

#include <bits/stdc++.h>

using namespace std;

#define int long long


main() {
  //freopen(".inp", "r", stdin);
  //freopen(".out", "w", stdout);
  ios_base::sync_with_stdio(0);
  cin.tie(nullptr);
  for (int i = 1; i < 100; ++i)
  {
    for (int j = 1; j < 100; ++j)
    {
      for (int k = 1; k < 100; ++k)
      {
        if ((i + j + k == 100) and (i * 15 + j * 9 + k == 300)) 
        {
          cout << "So trau dung la: " << i << '\n';
          cout << "So trau nam la: " << j << '\n';
          cout << "So trau gia la: " << k << '\n';
        }
      }  
    }
  }
  return 0;
}
  

#include <iostream>

int main() {
    for (int x = 1; x <= 100 / 5; ++x) {
        for (int y = 1; y <= 100 / 3; ++y) {
            int z = 100 - (x + y);
            if (15 * x + 9 * y + z == 300) {
                std::cout << x << " " << y << " " << z << std::endl;
            }
        }
    }
    return 0;
}