Submission #1206530

#	Time	Username	Problem	Language	Result	Execution time	Memory
1206530		avighna	COVID tests (CEOI24_covid)	C++20	10 / 100	7045 ms	432 KiB

Main

#include <bits/stdc++.h>

int main() {
  std::ios::sync_with_stdio(false);
  std::cin.tie(nullptr);

  int n, t;
  double p;
  std::cin >> n >> p >> t;

  auto solve_1000_queries = [&]() {
    std::string ans(n, '0');
    for (int i = 0; i < n; ++i) {
      std::cout << "Q ";
      for (int j = 0; j < n; ++j) {
        std::cout << (i == j);
      }
      std::cout << std::endl;
      char c;
      std::cin >> c;
      ans[i] = '0' + (c == 'P');
    }
    std::cout << "A " << ans << std::endl;
    char c;
    std::cin >> c;
  };

  if (t == 1) {
    solve_1000_queries();
    return 0;
  }

  while (t--) {
    if (p >= 0.15) {
      solve_1000_queries();
    } else {
      std::string ans(n, '0');
      for (int i = 0; i < n; ++i) {
        auto idx =
            *std::ranges::partition_point(std::views::iota(i, n), [&](int j) {
              std::string q(n, '0');
              for (int idx = i; idx <= j; ++idx) {
                q[idx] = '1';
              }
              std::cout << "Q " << q << std::endl;
              char c;
              std::cin >> c;
              return c == 'N';
            });
        if (idx < n) {
          ans[idx] = '1';
        }
        i = idx;
      }
      std::cout << "A " << ans << std::endl;
      char c;
      std::cin >> c;
    }
  }
}

• Subtask 0: 0 / 0
• Subtask 1: 10 / 10
• Subtask 2: 0 / 90