func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 1E6 + 5, INF = 1E9 + 7;   int m, n, ans = INF;   mt19937 mt(133769420);   int ask(int u, int v) {     cout <<  ?   << u <<     << v << endl;     int ret;     cin >> ret;     return ret;   }   int rand(int l, int r) {     uniform_int_distribution<int> uni(l, r);     return uni(mt);   }   void solve(int u, int d, int l, int r) {     if (u > d) {       return;     }     int m = rand(u, d);     pair<int, int> mi = {INF, 0};     for (int i = l; i <= r; i++) {       mi = min(mi, {ask(m, i), i});     }     ans = min(ans, mi.first);     solve(u, m - 1, l, mi.second);     solve(m + 1, d, mi.second, r);   }   int main() {     ios_base::sync_with_stdio(false);     cin.tie(nullptr);     cin >> m >> n;     solve(1, m, 1, n);     cout <<  !   << ans << endl;   }   