Cod sursa(job #3042401)

Utilizator BlaugranasEnal Gemaledin Blaugranas Data 6 aprilie 2023 09:23:53
Problema Cbinteractiv Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.2 kb
Raporteaza aceasta sursa 
#include<iostream>
using namespace std;
int n,l,r,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;
}