Cod sursa(job #3138207)
Utilizator | Data | 18 iunie 2023 08:06:00 | |
---|---|---|---|
Problema | Cbinteractiv | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.18 kb |
#include<iostream>
using namespace std;
int n,l=1,m,k;
int main()
{
for(cin>>n;l<n;m=(l+n)/2,cout<<"? "<<m<<'\n',cout.flush(),cin>>k,k?n=m:l=m+1);
return cout<<"! "<<l,0;
}