Submission #920382

#	Time	Username	Problem	Language	Result	Execution time	Memory
920382		vjudge1	L-triominoes (CEOI21_ltriominoes)	C++17	0 / 100	1 ms	344 KiB

ltrominoes

#include <iostream>
#include <vector>
#include <algorithm>
#include <cassert>
#include <cstring>
#warning That's the baby, that's not my baby

typedef long long ll;

const int NMAX = 1000;
const int MMAX = 13;

bool dp[NMAX + 1][1 << MMAX];

/// dp[i][mask01] =def= pot face primele i linii bine a.i. pe a i-a linie am 0 daca am pus deja sau 1 daca trebuie completat

int main() {
  std::ios_base::sync_with_stdio(false);
  std::cin.tie(0);

  int n, m, k;
  std::cin >> m >> n >> k;

  std::vector<std::pair<int, int>> v(k);
  for (auto &[x, y] : v) {
    std::cin >> y >> x;
    x = n - x + 1;
  }

  /// n = h, m = w

//  if (n <= 1000) {
//    dp[0][0] = true;
//    for (int i = 1; i <= n; i++) {
//      for (int mask = 0; mask < (1 << m); mask++) {
//        std::vector<int> bits;
//        for (int b = 0; b < m; b++) {
//          bits.push_back((mask >> b) & 1);
//        }
//        bool pref[m][2] = {}; /// pref[i][0/1] =def= pot face primele i a.i. al i-lea e 0/1?
//        pref[0][0] = true;
//        if (bits[0] == 0 && bits[1] == 0) {
//          pref[0][1] = true;
//        }
//        for (int b = 1; b < m; b++) {
//          if (bits[b] == 0) {
//            if (bits[b - 1] == 0) {
//
//            }
//          }
//        }
//      }
//    }
//  }

  if (k == 0) {
    if ((ll) n * m % 3 != 0) {
      std::cout << "NO";
    } else if ((ll) n * m % 6 == 0) {
      std::cout << "YES";
    } else {
      if (n == 3 && m == 3) {
        std::cout << "NO";
      } else if (n % 9 == 0 || m % 9 == 0) {
        std::cout << "YES";
      } else {
        std::cout << "NO";
      }
    }
    return 0;
  }

  return 0;
}

Compilation message (stderr)

ltrominoes.cpp:6:2: warning: #warning That's the baby, that's not my baby [-Wcpp]
    6 | #warning That's the baby, that's not my baby
      |  ^~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 7
• Subtask 3: 0 / 11
• Subtask 4: 0 / 17
• Subtask 5: 0 / 35
• Subtask 6: 0 / 20