oj.uz

Submission #959996

# Submission time Handle Problem Language Result Execution time Memory
959996 2024-04-09T12:02:54 Z mannshah1211 Colors (BOI20_colors) C++17
0 / 100
 0 ms 344 KB 
#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int n;
  cin >> n;
  auto question = [&](int col) {
    cout << "? " << col << '\n';
    fflush(stdout);
    int x;
    cin >> x;
    fflush(stdout);
    return x;
  };
  auto output = [&](int col) {
    cout << "= " << col << '\n';
    fflush(stdout);
  };
  question(1);
  int lo = 0, hi = n - 1, ind = -1;
  while (lo <= hi) {
    int mid = (lo + hi) / 2;
    question(1);
    if (question(mid + 1)) {
      ind = mid;
      lo = mid + 1;
    } else {
      hi = mid - 1;
    }
  }
  if (ind == -1) {
    output(n);
  } else {
    output(ind);
  }
}

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Hair color 1 was used multiple times
2 Halted 0 ms 0 KB -

Subtask #2
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Hair color 1 was used multiple times
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Hair color 1 was used multiple times
2 Halted 0 ms 0 KB -

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Hair color 1 was used multiple times
2 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Hair color 1 was used multiple times
2 Halted 0 ms 0 KB -