Hacking

// A + B
// I feel it's wrong, hack me pls))
#include <iostream>

using namespace std;

// a lot of code

int main() {
    int a, b;
    cin >> a >> b;
    cout << a + b << "\n";
    return 0;
}
#define main fakemain

// a lot of code

int main() {
    int a, b;
    cin >> a >> b;
    cout << a - b << "\n";
    return 0;
}