Submission #947306

#	Time	Username	Problem	Language	Result	Execution time	Memory
947306		SuPythony	Mađioničar (COI22_madionicar)	C++17	0 / 100	1 ms	344 KiB

Main

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n; cin>>n;
    int ans=-1;
    for (int i=n; i>=1; i--) {
        for (int j=1; j+i-1<=n; j++) {
            cout<<"? "<<j<<" "<<j+i-1<<flush;
            int res; cin>>res;
            if (res==1) {
                ans=i;
                break;
            }
        }
        if (ans!=-1) break;
    }
    cout<<"! "<<ans<<flush;
    return 0;
}

• Subtask 1: 0 / 13
• Subtask 2: 0 / 25
• Subtask 3: 0 / 25
• Subtask 4: 0 / 37