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Submission #94471

# Submission time Handle Problem Language Result Execution time Memory
94471 2019-01-19T02:47:54 Z wxh010910 Toy Train (IOI17_train) C++17
100 / 100
 592 ms 1528 KB 
#include <bits/stdc++.h>
#include "train.h"

using namespace std;

vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) {
  int n = a.size(), m = u.size();
  vector<vector<int>> adj(n);
  vector<int> deg(n);
  for (int i = 0; i < m; ++i) {
    adj[v[i]].push_back(u[i]);
    ++deg[u[i]];
  }
  while (true) {
    vector<int> win = r;
    {
      vector<int> degree = deg;
      queue<int> q;
      for (int i = 0; i < n; ++i) {
        if (win[i]) {
          q.push(i);
        }
      }
      while (!q.empty()) {
        int x = q.front();
        q.pop();
        for (auto y : adj[x]) {
          if (!win[y]) {
            if (a[y] || !--degree[y]) {
              win[y] = 1;
              q.push(y);
            }
          }
        }
      }
    }
    {
      vector<int> degree = deg;
      queue<int> q;
      for (int i = 0; i < n; ++i) {
        if (!win[i]) {
          q.push(i);
        }
      }
      while (!q.empty()) {
        int x = q.front();
        q.pop();
        for (auto y : adj[x]) {
          if (win[y]) {
            if (!a[y] || !--degree[y]) {
              win[y] = 0;
              q.push(y);
            }
          }
        }
      }
    }
    bool changed = false;
    for (int i = 0; i < n; ++i) {
      if (r[i] && !win[i]) {
        changed = true;
        r[i] = 0;
      }
    }
    if (!changed) {
      return win;
    }
  }
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 1016 KB Output is correct
2 Correct 7 ms 888 KB Output is correct
3 Correct 6 ms 888 KB Output is correct
4 Correct 6 ms 888 KB Output is correct
5 Correct 6 ms 1016 KB Output is correct
6 Correct 6 ms 888 KB Output is correct
7 Correct 8 ms 888 KB Output is correct
8 Correct 6 ms 1016 KB Output is correct
9 Correct 5 ms 888 KB Output is correct
10 Correct 5 ms 956 KB Output is correct
11 Correct 5 ms 856 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 256 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 1380 KB Output is correct
2 Correct 130 ms 1400 KB Output is correct
3 Correct 194 ms 1500 KB Output is correct
4 Correct 9 ms 1272 KB Output is correct
5 Correct 10 ms 1400 KB Output is correct
6 Correct 10 ms 1400 KB Output is correct
7 Correct 9 ms 1400 KB Output is correct
8 Correct 8 ms 1400 KB Output is correct
9 Correct 8 ms 1272 KB Output is correct
10 Correct 8 ms 1272 KB Output is correct
11 Correct 8 ms 1272 KB Output is correct
12 Correct 9 ms 1272 KB Output is correct
13 Correct 8 ms 1444 KB Output is correct
14 Correct 9 ms 1400 KB Output is correct
15 Correct 9 ms 1400 KB Output is correct
16 Correct 9 ms 1400 KB Output is correct
17 Correct 8 ms 1276 KB Output is correct
18 Correct 321 ms 1144 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1144 KB Output is correct
2 Correct 8 ms 1144 KB Output is correct
3 Correct 9 ms 1272 KB Output is correct
4 Correct 9 ms 1400 KB Output is correct
5 Correct 9 ms 1272 KB Output is correct
6 Correct 9 ms 1272 KB Output is correct
7 Correct 9 ms 1272 KB Output is correct
8 Correct 8 ms 1272 KB Output is correct
9 Correct 8 ms 1276 KB Output is correct
10 Correct 8 ms 1272 KB Output is correct
11 Correct 9 ms 1400 KB Output is correct
12 Correct 9 ms 1272 KB Output is correct
13 Correct 8 ms 1272 KB Output is correct
14 Correct 8 ms 1148 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 1272 KB Output is correct
2 Correct 8 ms 1272 KB Output is correct
3 Correct 10 ms 1272 KB Output is correct
4 Correct 8 ms 1272 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 5 ms 1016 KB Output is correct
7 Correct 6 ms 888 KB Output is correct
8 Correct 6 ms 1016 KB Output is correct
9 Correct 6 ms 888 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 5 ms 888 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 1016 KB Output is correct
2 Correct 7 ms 888 KB Output is correct
3 Correct 6 ms 888 KB Output is correct
4 Correct 6 ms 888 KB Output is correct
5 Correct 6 ms 1016 KB Output is correct
6 Correct 6 ms 888 KB Output is correct
7 Correct 8 ms 888 KB Output is correct
8 Correct 6 ms 1016 KB Output is correct
9 Correct 5 ms 888 KB Output is correct
10 Correct 5 ms 956 KB Output is correct
11 Correct 5 ms 856 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 256 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 256 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 78 ms 1380 KB Output is correct
33 Correct 130 ms 1400 KB Output is correct
34 Correct 194 ms 1500 KB Output is correct
35 Correct 9 ms 1272 KB Output is correct
36 Correct 10 ms 1400 KB Output is correct
37 Correct 10 ms 1400 KB Output is correct
38 Correct 9 ms 1400 KB Output is correct
39 Correct 8 ms 1400 KB Output is correct
40 Correct 8 ms 1272 KB Output is correct
41 Correct 8 ms 1272 KB Output is correct
42 Correct 8 ms 1272 KB Output is correct
43 Correct 9 ms 1272 KB Output is correct
44 Correct 8 ms 1444 KB Output is correct
45 Correct 9 ms 1400 KB Output is correct
46 Correct 9 ms 1400 KB Output is correct
47 Correct 9 ms 1400 KB Output is correct
48 Correct 8 ms 1276 KB Output is correct
49 Correct 321 ms 1144 KB Output is correct
50 Correct 8 ms 1144 KB Output is correct
51 Correct 8 ms 1144 KB Output is correct
52 Correct 9 ms 1272 KB Output is correct
53 Correct 9 ms 1400 KB Output is correct
54 Correct 9 ms 1272 KB Output is correct
55 Correct 9 ms 1272 KB Output is correct
56 Correct 9 ms 1272 KB Output is correct
57 Correct 8 ms 1272 KB Output is correct
58 Correct 8 ms 1276 KB Output is correct
59 Correct 8 ms 1272 KB Output is correct
60 Correct 9 ms 1400 KB Output is correct
61 Correct 9 ms 1272 KB Output is correct
62 Correct 8 ms 1272 KB Output is correct
63 Correct 8 ms 1148 KB Output is correct
64 Correct 10 ms 1272 KB Output is correct
65 Correct 8 ms 1272 KB Output is correct
66 Correct 10 ms 1272 KB Output is correct
67 Correct 8 ms 1272 KB Output is correct
68 Correct 3 ms 376 KB Output is correct
69 Correct 5 ms 1016 KB Output is correct
70 Correct 6 ms 888 KB Output is correct
71 Correct 6 ms 1016 KB Output is correct
72 Correct 6 ms 888 KB Output is correct
73 Correct 3 ms 504 KB Output is correct
74 Correct 5 ms 888 KB Output is correct
75 Correct 98 ms 1504 KB Output is correct
76 Correct 156 ms 1400 KB Output is correct
77 Correct 208 ms 1408 KB Output is correct
78 Correct 209 ms 1372 KB Output is correct
79 Correct 207 ms 1528 KB Output is correct
80 Correct 9 ms 1320 KB Output is correct
81 Correct 9 ms 1400 KB Output is correct
82 Correct 9 ms 1268 KB Output is correct
83 Correct 9 ms 1272 KB Output is correct
84 Correct 10 ms 1400 KB Output is correct
85 Correct 10 ms 1276 KB Output is correct
86 Correct 9 ms 1272 KB Output is correct
87 Correct 9 ms 1272 KB Output is correct
88 Correct 11 ms 1400 KB Output is correct
89 Correct 9 ms 1272 KB Output is correct
90 Correct 14 ms 1272 KB Output is correct
91 Correct 14 ms 1400 KB Output is correct
92 Correct 24 ms 1400 KB Output is correct
93 Correct 22 ms 1272 KB Output is correct
94 Correct 25 ms 1248 KB Output is correct
95 Correct 25 ms 1272 KB Output is correct
96 Correct 68 ms 1244 KB Output is correct
97 Correct 375 ms 1356 KB Output is correct
98 Correct 568 ms 1404 KB Output is correct
99 Correct 592 ms 1400 KB Output is correct
100 Correct 340 ms 1016 KB Output is correct