제출 #851051

#제출 시각아이디문제언어결과실행 시간메모리
851051_Knyaz_Guess the number (BOI20_guess)C++17
0 / 100
1 ms344 KiB
/// 18.09.2023 16:09
#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n; cin >> n;
    int l = 1, r = 10;
    while(l <= r){
        int mid = (l + r) / 2;
        cout << "? " << mid << '\n';
        cout.flush();
        int q; cin >> q;
        if(!q){ cout << "= " << mid << '\n'; return 0; }
        else if(q > 0) r = mid - 1;
        else l = mid + 1;
    }
}
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