Submission #980147

#	Time	Username	Problem	Language	Result	Execution time	Memory
980147		nhuang685	Tales of seafaring (POI13_mor)	C++17	100 / 100	1154 ms	102712 KiB

mor

#include <bits/stdc++.h>

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

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

  std::vector<std::vector<int>> adj(n);
  for (int i = 0; i < m; ++i) {
    int a, b;
    std::cin >> a >> b;
    --a;
    --b;
    adj[a].push_back(b);
    adj[b].push_back(a);
  }

  std::vector<std::vector<std::array<short, 2>>> dist(n, std::vector<std::array<short, 2>>(n));
  for (int i = 0; i < n; ++i) {
    for (int j = 0; j < n; ++j) {
      dist[i][j][0] = dist[i][j][1] = 10000;
    }
  }
  auto sp = [&](int st) {
    // std::vector<std::array<int, 2>> dist(n, {(int)2e9, (int)2e9});
    dist[st][st][0] = 0;
    std::queue<std::pair<int, bool>> q;
    q.emplace(st, 0);
    while (!q.empty()) {
      auto [node, par] = q.front();
      q.pop();
      for (int i : adj[node]) {
        if (dist[st][i][!par] > dist[st][node][par] + 1) {
          dist[st][i][!par] = dist[st][node][par] + 1;
          q.push({i, !par});
        }
      }
    }
  };
  for (int i = 0; i < n; ++i) {
    sp(i);
  }
  while (k--) {
    int s, t, d;
    std::cin >> s >> t >> d;
    --s;
    --t;
    d = std::min(d, 9998 + d % 2);
    if (d >= dist[s][t][d % 2] && (int)adj[s].size() > 0) {
      std::cout << "TAK\n";
    } else {
      std::cout << "NIE\n";
    }
  }
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10