oj.uz

Submission #1042002

# Submission time Handle Problem Language Result Execution time Memory
1042002 2024-08-02T11:59:53 Z vjudge1 Tropical Garden (IOI11_garden) C++17
69 / 100
 5000 ms 97416 KB 
#include "garden.h"
#include "gardenlib.h"
#include <bits/stdc++.h>

using namespace std;

void count_routes(int N, int M, int P, int R[][2], int Q, int G[])
{
  vector<vector<int>> adj(N);
  for (int i = 0; i < M; ++i) {
    adj[R[i][0]].push_back(R[i][1]);
    adj[R[i][1]].push_back(R[i][0]);
  }

  set<pair<int,int>> nodes;

  for (int i = 0; i < N; ++i) {
    nodes.insert({-1, i});
    for (int v : adj[i]) nodes.insert({i, v});
  }

  int siz = nodes.size();
  
  vector<bool> inP(siz, false);
  map<pair<int,int>,int> idx;
  int idx_ = 0;
  for (auto node : nodes) {
    idx[node] = idx_;
    if (node.second == P) inP[idx_] = true;
    ++idx_;
  }
  nodes.clear();

  const int J = 29;
  vector<vector<int>> succ(J+1, vector<int>(siz, -1));
  for (int i = 0; i < N; ++i) {
    succ[0][idx[{-1, i}]] = idx[{i, adj[i][0]}];
    for (int v : adj[i]) {
      if (v != adj[i][0] or adj[i].size() == 1)
        succ[0][idx[{v, i}]] = idx[{i, adj[i][0]}];
      else
        succ[0][idx[{v, i}]] = idx[{i, adj[i][1]}];
    }
  }

  for (int j = 1; j <= J; ++j) {
    for (int u = 0; u < siz; ++u) {
      succ[j][u] = succ[j-1][ succ[j-1][u] ];
    }
  }

  for(int it = 0; it < Q; ++it) {
    int K = G[it];
    int cnt = 0;

    for (int i = 0; i < N; ++i) {
      int u = idx[{-1, i}];
      
      for (int j = J; j >= 0; --j) {
        if (K & (1 << j)) u = succ[j][u];
      }

      if (inP[u]) ++cnt;
    }

    answer(cnt);
  }
}

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 856 KB Output is correct
2 Correct 1 ms 860 KB Output is correct
3 Correct 1 ms 1116 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 3 ms 1368 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 860 KB Output is correct
9 Correct 9 ms 3676 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 856 KB Output is correct
2 Correct 1 ms 860 KB Output is correct
3 Correct 1 ms 1116 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 3 ms 1368 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 860 KB Output is correct
9 Correct 9 ms 3676 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 36 ms 16632 KB Output is correct
12 Correct 96 ms 32236 KB Output is correct
13 Correct 164 ms 55692 KB Output is correct
14 Correct 358 ms 90816 KB Output is correct
15 Correct 395 ms 93604 KB Output is correct
16 Correct 309 ms 78188 KB Output is correct
17 Correct 301 ms 74592 KB Output is correct
18 Correct 100 ms 32084 KB Output is correct
19 Correct 352 ms 90684 KB Output is correct
20 Correct 360 ms 93484 KB Output is correct
21 Correct 320 ms 78036 KB Output is correct
22 Correct 333 ms 74576 KB Output is correct
23 Correct 400 ms 97416 KB Output is correct

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 856 KB Output is correct
2 Correct 1 ms 860 KB Output is correct
3 Correct 1 ms 1116 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 3 ms 1368 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 860 KB Output is correct
9 Correct 9 ms 3676 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 36 ms 16632 KB Output is correct
12 Correct 96 ms 32236 KB Output is correct
13 Correct 164 ms 55692 KB Output is correct
14 Correct 358 ms 90816 KB Output is correct
15 Correct 395 ms 93604 KB Output is correct
16 Correct 309 ms 78188 KB Output is correct
17 Correct 301 ms 74592 KB Output is correct
18 Correct 100 ms 32084 KB Output is correct
19 Correct 352 ms 90684 KB Output is correct
20 Correct 360 ms 93484 KB Output is correct
21 Correct 320 ms 78036 KB Output is correct
22 Correct 333 ms 74576 KB Output is correct
23 Correct 400 ms 97416 KB Output is correct
24 Correct 10 ms 344 KB Output is correct
25 Correct 4881 ms 16720 KB Output is correct
26 Execution timed out 5047 ms 32080 KB Time limit exceeded
27 Halted 0 ms 0 KB -