Submission #637977

#	Time	Username	Problem	Language	Result	Execution time	Memory
637977		mannshah1211	Colors (BOI20_colors)	C++14	0 / 100	0 ms	208 KiB

Colors

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
 
int main(){
  ll n;
  cin >> n;
  
  ll lo = 1, hi = n, mid = -1;
  while(lo <= hi){
    mid = (lo + hi)/2;
    cout << "?" << ' ' << mid << endl;
    ll x;
    cin >> x;
    
    if(x == 1){
      hi = mid - 1;
    } else{
      lo = mid + 1;
    }
  }
  
  cout << "=" << ' ' << mid << endl;
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 13
• Subtask 3: 0 / 21
• Subtask 4: 0 / 24
• Subtask 5: 0 / 33