Hello codeforces, yesterday I read this problem 1934C - Find a Mine and I thought and today I am trying to solve it, I get the solution but it has a bug please can you help me this is my code:

include "bits/stdc++.h"

using namespace std; int32_t main() { //ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0); int t; cin >> t; while (t--) { int n , m , d1 , d2 , d3 , d4; cin >> n >> m; n-- , m--; cout << "? " << 1 << " " << 1 << "\n"; cin >> d1; cout << "? " << 1 << " " << m+1 << "\n"; cin >> d2; cout << "? " << n+1 << " " << m+1 << "\n"; cin >> d3; int y = (m+d1-d2)/2 , x = d1-y; if (x < 0) x += 0-x; if (y > m) y -= y-m; if (y < 0) y += 0-x; if (x > n) x -= x-n; cout << "? " << x+1 << " " << y+1 << "\n"; cin >> d4; if (d4 == 0){ cout << "! " << x+1 << " " << y+1 << "\n"; continue; } x = (n+d1-d3)/2 , y = x+m-d2; cout << "! " << x+1 << " " << y+1 << "\n"; cout << "\n"; } return 0; } Thanks very much!