Submission #642308

#	Time	Username	Problem	Language	Result	Execution time	Memory
642308		Erennedirlo	Guess the number (BOI20_guess)	C++17	0 / 100	2515 ms	208 KiB

Guess

#include<bits/stdc++.h>
using namespace std;

int main(){
  cout.tie(0); cin.tie(0); ios_base::sync_with_stdio(0);
  int N;
  cin>>N;
  
  int left=1, right=N;

  while(left <= right){
    int tmp=(right-left)/2+left;
    int ans;
    cout<<"?"<<" "<<tmp<<endl;
    cin>>ans;
    if(ans==-1){
      right=tmp;
    }
    else if(ans==0){
      cout<<"= "<<tmp;
      break;
    }
    else{
      left=tmp;
    }
  }

  return 0;
}

• Subtask 1: 0 / 29
• Subtask 2: 0 / 71