Cod sursa(job #3324029)

Utilizator Iustin.DDragusanu Iustin Iustin.D Data 20 noiembrie 2025 19:09:26
Problema Cbinteractiv Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.32 kb
Raporteaza aceasta sursa 
#include <iostream>
using namespace std;

#define int long long

int32_t main()
{
    int n;
    cin>>n;
    int l=1,r=n;
    while (l<r)
    {
        int mid=(l+r)/2;
        cout<<"? "<<mid<<endl;
        int t;
        cin>>t;
        if (t==0) l=mid+1;
        else r=mid;
    }
    cout<<"! "<<l<<endl;
}