Cod sursa(job #3042403)
Utilizator | Data | 6 aprilie 2023 09:24:43 | |
---|---|---|---|
Problema | Cbinteractiv | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.2 kb |
#include<iostream>
using namespace std;
int n,l,x,m;
int main()
{
for(cin>>n,l=1;l<n;m=(l+n)/2,cout<<"? "<<m<<'\n',cout.flush(),cin>>x,x?n=m:l=m+1);
return cout<<"! "<<l,cout.flush(),0;
}