Cod sursa(job #3120572)
Utilizator | Data | 7 aprilie 2023 16:02:52 | |
---|---|---|---|
Problema | Cbinteractiv | Scor | 0 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.44 kb |
#include <bits/stdc++.h>
using namespace std;
int main()
{
int n;
cin >> n;
int r = 0, pas = 1 << 19;
while(pas)
{
if(r + pas <= n)
{
cout << "? " << r + pas << endl;
///endl = '\n' + flush()
int x;
cin >> x;
if(x == 1)
r += pas;
}
pas /= 2;
}
cout << "! " << r << endl;
return 0;
}