Cod sursa(job #2784351)

Utilizator elenacurecheriuElena Curecheriu elenacurecheriu Data 16 octombrie 2021 12:53:02
Problema Cbinteractiv Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.33 kb
Raporteaza aceasta sursa 
#include <iostream>

using namespace std;

int st,dr,mij,ans;
int main()
{
    cin>>dr;
    st=1;
    while(st<=dr)
    {
        mij=(st+dr)/2;
        cout<<"? "<<mij<<endl;
        cin>>ans;
        if(ans==0)
            st=mij+1;
        else
            dr=mij-1;
    }
    cout<<"! "<<st<<endl;
    return 0;
}