func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, m, p[50];   int ask(int second) {     cout << second <<   n ;     fflush(stdout);     cin >> second;     return second;   }   int main() {     cin >> m >> n;     for (int i = 0; i < n; i++) {       p[i] = ask(1);       if (p[i] == 0) {         cout << 1 <<   n ;         exit(0);       }     }     int l = 1, r = m, t = 0;     while (l <= r) {       int m = (l + r) / 2;       int tmp = ask(m) * p[t];       if (tmp == 0) {         cout << tmp <<   n ;         exit(0);       }       if (tmp == -1)         r = m - 1;       else         l = m + 1;       t = (t + 1) % n;     }   }   