oj.uz

Submission #867090

# Submission time Handle Problem Language Result Execution time Memory
867090 2023-10-27T16:43:57 Z nima_aryan Jail (JOI22_jail) C++17
72 / 100
 4959 ms 1048576 KB 
/**
 *    author:  NimaAryan
 *    created: 2023-10-12 11:20:40
**/
#include <bits/stdc++.h>

using namespace std;

#pragma GCC optimize("Ofast,unroll-loops")

#ifdef LOCAL
#include "algo/debug.h"
#endif

using i64 = long long;

template <class Fun>
class y_combinator_result {
  Fun fun_;
 public:
  template <class T>
  explicit y_combinator_result(T&& fun) : fun_(std::forward<T>(fun)) {}

  template <class ...Args>
  decltype(auto) operator()(Args&& ...args) {
    return fun_(std::ref(*this), std::forward<Args>(args)...);
  }
};

template <class Fun>
decltype(auto) y_combinator(Fun&& fun) {
  return y_combinator_result<std::decay_t<Fun>>(std::forward<Fun>(fun));
}

void solve() {
  int N;
  cin >> N;
  vector<vector<int>> t(N);
  for (int i = 0; i < N - 1; ++i) {
    int A, B;
    cin >> A >> B;
    --A, --B;
    t[A].push_back(B);
    t[B].push_back(A);
  }
  int M;
  cin >> M;
  vector<int> S(M), T(M);
  vector<int> whoS(N, -1), whoT(N, -1);
  vector<vector<pair<int, int>>> qs(N);
  for (int i = 0; i < M; ++i) {
    cin >> S[i] >> T[i];
    --S[i], --T[i];
    whoS[S[i]] = whoT[T[i]] = i;
    qs[S[i]].emplace_back(T[i], i);
    qs[T[i]].emplace_back(S[i], i);
  }
  vector<int> LCA(M);
  vector<bool> vis(N);
  vector<int> repr(N), par(N);
  auto find = y_combinator([&](auto self, int v) -> int {
    return repr[v] == v ? v : repr[v] = self(repr[v]);
  });
  auto dfs = y_combinator([&](auto self, int v) -> void {
    vis[v] = true;
    repr[v] = v;
    for (int u : t[v]) {
      if (!vis[u]) {
        par[u] = v;
        self(u);
        repr[find(u)] = v;
      }
    }
    for (auto [u, i] : qs[v]) {
      if (vis[u]) {
        LCA[i] = find(u);
      }
    }
  });
  dfs(0);
  vector<vector<int>> h(M);
  for (int i = 0; i < M; ++i) {
    auto [s, t] = pair(S[i], T[i]);
    int lca = LCA[i];
    vector<int> path{lca};
    while (s != lca) {
      path.push_back(s);
      s = par[s];
    }
    while (t != lca) {
      path.push_back(t);
      t = par[t];
    }
    for (int x : path) {
      if (whoS[x] != -1 && whoS[x] != i) {
        h[i].push_back(whoS[x]);
      }
      if (whoT[x] != -1 && whoT[x] != i) {
        h[whoT[x]].push_back(i);
      }
    }
  }
  vector<int> seen(M);
  bool fail = false;
  auto check = y_combinator([&](auto self, int v) -> void {
    seen[v] = 1;
    for (int u : h[v]) {
      if (!seen[u]) {
        self(u);
      } else if (seen[u] == 1) {
        fail = true;
      }
    }
    seen[v] = 2;
  });
  for (int i = 0; i < M; ++i) {
    if (!seen[i]) {
      check(i);
    }
  }
  cout << (fail ? "No" : "Yes") << "\n";
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int Q;
  cin >> Q;
  while (Q--) {
    solve();
  }
  return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 17 ms 828 KB Output is correct
5 Correct 23 ms 984 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 2 ms 348 KB Output is correct
8 Correct 4 ms 604 KB Output is correct
9 Correct 124 ms 3804 KB Output is correct
10 Correct 482 ms 26668 KB Output is correct
11 Correct 7 ms 604 KB Output is correct
12 Correct 60 ms 1244 KB Output is correct
13 Correct 130 ms 58964 KB Output is correct
14 Correct 160 ms 73096 KB Output is correct
15 Runtime error 4959 ms 1048576 KB Execution killed with signal 9
16 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 716 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 464 KB Output is correct
13 Correct 1 ms 344 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 716 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 464 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 456 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 460 KB Output is correct
18 Correct 2 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 524 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 2 ms 344 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 356 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 716 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 464 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 456 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 460 KB Output is correct
18 Correct 2 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 524 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 2 ms 344 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 356 KB Output is correct
29 Correct 4 ms 612 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 3 ms 356 KB Output is correct
32 Correct 2 ms 356 KB Output is correct
33 Correct 2 ms 348 KB Output is correct
34 Correct 2 ms 348 KB Output is correct
35 Correct 3 ms 356 KB Output is correct
36 Correct 2 ms 348 KB Output is correct
37 Correct 2 ms 348 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 716 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 464 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 456 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 460 KB Output is correct
18 Correct 2 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 524 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 2 ms 344 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 356 KB Output is correct
29 Correct 4 ms 612 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 3 ms 356 KB Output is correct
32 Correct 2 ms 356 KB Output is correct
33 Correct 2 ms 348 KB Output is correct
34 Correct 2 ms 348 KB Output is correct
35 Correct 3 ms 356 KB Output is correct
36 Correct 2 ms 348 KB Output is correct
37 Correct 2 ms 348 KB Output is correct
38 Correct 118 ms 4156 KB Output is correct
39 Correct 477 ms 27048 KB Output is correct
40 Correct 63 ms 2812 KB Output is correct
41 Correct 29 ms 2224 KB Output is correct
42 Correct 50 ms 2812 KB Output is correct
43 Correct 25 ms 2360 KB Output is correct
44 Correct 11 ms 860 KB Output is correct
45 Correct 36 ms 13288 KB Output is correct
46 Correct 34 ms 13532 KB Output is correct
47 Correct 109 ms 19312 KB Output is correct
48 Correct 109 ms 19604 KB Output is correct
49 Correct 43 ms 13496 KB Output is correct
50 Correct 37 ms 13332 KB Output is correct
51 Correct 29 ms 14940 KB Output is correct
52 Correct 30 ms 14892 KB Output is correct
53 Correct 9 ms 1624 KB Output is correct
54 Correct 40 ms 13148 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 7 ms 604 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 2 ms 504 KB Output is correct
13 Correct 28 ms 856 KB Output is correct
14 Correct 37 ms 1228 KB Output is correct
15 Correct 34 ms 1108 KB Output is correct
16 Correct 43 ms 14676 KB Output is correct
17 Correct 150 ms 25424 KB Output is correct
18 Correct 342 ms 51264 KB Output is correct
19 Correct 46 ms 15440 KB Output is correct
20 Correct 83 ms 15624 KB Output is correct
21 Correct 73 ms 15440 KB Output is correct
22 Correct 105 ms 26288 KB Output is correct
23 Correct 99 ms 26184 KB Output is correct
24 Correct 84 ms 26060 KB Output is correct
25 Correct 93 ms 26188 KB Output is correct
26 Correct 104 ms 26184 KB Output is correct
27 Correct 140 ms 31436 KB Output is correct
28 Correct 109 ms 32716 KB Output is correct
29 Correct 99 ms 29900 KB Output is correct
30 Correct 89 ms 24468 KB Output is correct
31 Correct 79 ms 24784 KB Output is correct
32 Correct 115 ms 24204 KB Output is correct
33 Correct 104 ms 24924 KB Output is correct

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 17 ms 828 KB Output is correct
5 Correct 23 ms 984 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 2 ms 348 KB Output is correct
8 Correct 4 ms 604 KB Output is correct
9 Correct 124 ms 3804 KB Output is correct
10 Correct 482 ms 26668 KB Output is correct
11 Correct 7 ms 604 KB Output is correct
12 Correct 60 ms 1244 KB Output is correct
13 Correct 130 ms 58964 KB Output is correct
14 Correct 160 ms 73096 KB Output is correct
15 Runtime error 4959 ms 1048576 KB Execution killed with signal 9
16 Halted 0 ms 0 KB -