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Submission #807636

# Submission time Handle Problem Language Result Execution time Memory
807636 2023-08-04T20:54:56 Z dong_liu Stranded Far From Home (BOI22_island) C++17
100 / 100
 117 ms 25540 KB 
#include <algorithm>
#include <array>
#include <iostream>
#include <vector>
using namespace std;

const int N = 2e5;

int e[N];

int find(int i) { return e[i] < 0 ? i : e[i] = find(e[i]); }

void link(int i, int j) {
  i = find(i), j = find(j);
  if (e[i] > e[j]) swap(i, j);
  e[i] += e[j], e[j] = i;
}

int main() {
  ios::sync_with_stdio(0), cin.tie(0);
  int n, m;
  cin >> n >> m;
  static int s[N];
  for (int i = 0; i < n; i++) cin >> s[i];
  vector<array<int, 3>> ed(m);
  for (auto &[v, i, j] : ed) {
    cin >> i >> j, i--, j--;
    v = max(s[i], s[j]);
  }
  sort(ed.begin(), ed.end());
  static vector<int> win[N];
  static long long sm[N];
  for (int i = 0; i < n; i++) e[i] = -1, sm[i] = s[i], win[i].push_back(i);
  for (auto [w, i, j] : ed) {
    int u = find(i), v = find(j);
    if (u == v) continue;
    link(i, j);
    int t = find(i);
    if (sm[u] < s[j])
      swap(win[t], win[v]);
    else if (sm[v] < s[i])
      swap(win[t], win[u]);
    else {
      if (win[v].size() > win[u].size()) swap(win[u], win[v]);
      for (int i : win[v]) win[u].push_back(i);
      swap(win[t], win[u]);
    }
    sm[t] = sm[u] + sm[v];
  }
  static bool w[N];
  for (int i : win[find(0)]) w[i] = 1;
  for (int i = 0; i < n; i++) cout << w[i];
  cout << '\n';
  return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4936 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 3 ms 5076 KB Output is correct
5 Correct 3 ms 5204 KB Output is correct
6 Correct 3 ms 5096 KB Output is correct
7 Correct 3 ms 5076 KB Output is correct
8 Correct 3 ms 5096 KB Output is correct
9 Correct 3 ms 5076 KB Output is correct
10 Correct 3 ms 5204 KB Output is correct
11 Correct 4 ms 5204 KB Output is correct
12 Correct 3 ms 5204 KB Output is correct
13 Correct 3 ms 5204 KB Output is correct
14 Correct 3 ms 5076 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4932 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 86 ms 22468 KB Output is correct
4 Correct 90 ms 20976 KB Output is correct
5 Correct 102 ms 23740 KB Output is correct
6 Correct 97 ms 24240 KB Output is correct
7 Correct 98 ms 24256 KB Output is correct
8 Correct 92 ms 22436 KB Output is correct
9 Correct 88 ms 25540 KB Output is correct
10 Correct 80 ms 20472 KB Output is correct
11 Correct 81 ms 21360 KB Output is correct
12 Correct 93 ms 21064 KB Output is correct
13 Correct 76 ms 20804 KB Output is correct
14 Correct 86 ms 20968 KB Output is correct
15 Correct 86 ms 22468 KB Output is correct
16 Correct 60 ms 21568 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 107 ms 25164 KB Output is correct
3 Correct 98 ms 25204 KB Output is correct
4 Correct 86 ms 22536 KB Output is correct
5 Correct 84 ms 20904 KB Output is correct
6 Correct 99 ms 25264 KB Output is correct
7 Correct 79 ms 22516 KB Output is correct
8 Correct 80 ms 22448 KB Output is correct
9 Correct 68 ms 21620 KB Output is correct
10 Correct 80 ms 21368 KB Output is correct
11 Correct 85 ms 20976 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 103 ms 22980 KB Output is correct
3 Correct 104 ms 23332 KB Output is correct
4 Correct 113 ms 24392 KB Output is correct
5 Correct 108 ms 25280 KB Output is correct
6 Correct 100 ms 23204 KB Output is correct
7 Correct 83 ms 22408 KB Output is correct
8 Correct 71 ms 21188 KB Output is correct
9 Correct 69 ms 15564 KB Output is correct
10 Correct 98 ms 24460 KB Output is correct
11 Correct 86 ms 20940 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4936 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 3 ms 5076 KB Output is correct
5 Correct 3 ms 5204 KB Output is correct
6 Correct 3 ms 5096 KB Output is correct
7 Correct 3 ms 5076 KB Output is correct
8 Correct 3 ms 5096 KB Output is correct
9 Correct 3 ms 5076 KB Output is correct
10 Correct 3 ms 5204 KB Output is correct
11 Correct 4 ms 5204 KB Output is correct
12 Correct 3 ms 5204 KB Output is correct
13 Correct 3 ms 5204 KB Output is correct
14 Correct 3 ms 5076 KB Output is correct
15 Correct 2 ms 4932 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 86 ms 22468 KB Output is correct
18 Correct 90 ms 20976 KB Output is correct
19 Correct 102 ms 23740 KB Output is correct
20 Correct 97 ms 24240 KB Output is correct
21 Correct 98 ms 24256 KB Output is correct
22 Correct 92 ms 22436 KB Output is correct
23 Correct 88 ms 25540 KB Output is correct
24 Correct 80 ms 20472 KB Output is correct
25 Correct 81 ms 21360 KB Output is correct
26 Correct 93 ms 21064 KB Output is correct
27 Correct 76 ms 20804 KB Output is correct
28 Correct 86 ms 20968 KB Output is correct
29 Correct 86 ms 22468 KB Output is correct
30 Correct 60 ms 21568 KB Output is correct
31 Correct 3 ms 4948 KB Output is correct
32 Correct 107 ms 25164 KB Output is correct
33 Correct 98 ms 25204 KB Output is correct
34 Correct 86 ms 22536 KB Output is correct
35 Correct 84 ms 20904 KB Output is correct
36 Correct 99 ms 25264 KB Output is correct
37 Correct 79 ms 22516 KB Output is correct
38 Correct 80 ms 22448 KB Output is correct
39 Correct 68 ms 21620 KB Output is correct
40 Correct 80 ms 21368 KB Output is correct
41 Correct 85 ms 20976 KB Output is correct
42 Correct 3 ms 4948 KB Output is correct
43 Correct 103 ms 22980 KB Output is correct
44 Correct 104 ms 23332 KB Output is correct
45 Correct 113 ms 24392 KB Output is correct
46 Correct 108 ms 25280 KB Output is correct
47 Correct 100 ms 23204 KB Output is correct
48 Correct 83 ms 22408 KB Output is correct
49 Correct 71 ms 21188 KB Output is correct
50 Correct 69 ms 15564 KB Output is correct
51 Correct 98 ms 24460 KB Output is correct
52 Correct 86 ms 20940 KB Output is correct
53 Correct 2 ms 4948 KB Output is correct
54 Correct 2 ms 4948 KB Output is correct
55 Correct 2 ms 4932 KB Output is correct
56 Correct 3 ms 5076 KB Output is correct
57 Correct 3 ms 5204 KB Output is correct
58 Correct 3 ms 5076 KB Output is correct
59 Correct 3 ms 5076 KB Output is correct
60 Correct 3 ms 5076 KB Output is correct
61 Correct 3 ms 5200 KB Output is correct
62 Correct 3 ms 5204 KB Output is correct
63 Correct 3 ms 5108 KB Output is correct
64 Correct 3 ms 5092 KB Output is correct
65 Correct 3 ms 5076 KB Output is correct
66 Correct 3 ms 5076 KB Output is correct
67 Correct 84 ms 22460 KB Output is correct
68 Correct 77 ms 20964 KB Output is correct
69 Correct 90 ms 23684 KB Output is correct
70 Correct 97 ms 24312 KB Output is correct
71 Correct 93 ms 24320 KB Output is correct
72 Correct 90 ms 22408 KB Output is correct
73 Correct 87 ms 25452 KB Output is correct
74 Correct 98 ms 20504 KB Output is correct
75 Correct 83 ms 21440 KB Output is correct
76 Correct 84 ms 21112 KB Output is correct
77 Correct 76 ms 20832 KB Output is correct
78 Correct 82 ms 20964 KB Output is correct
79 Correct 80 ms 22508 KB Output is correct
80 Correct 61 ms 21644 KB Output is correct
81 Correct 104 ms 25100 KB Output is correct
82 Correct 98 ms 25200 KB Output is correct
83 Correct 95 ms 22500 KB Output is correct
84 Correct 77 ms 20888 KB Output is correct
85 Correct 99 ms 25348 KB Output is correct
86 Correct 79 ms 22532 KB Output is correct
87 Correct 80 ms 22504 KB Output is correct
88 Correct 80 ms 21348 KB Output is correct
89 Correct 93 ms 20940 KB Output is correct
90 Correct 107 ms 22980 KB Output is correct
91 Correct 107 ms 23416 KB Output is correct
92 Correct 108 ms 24304 KB Output is correct
93 Correct 117 ms 25324 KB Output is correct
94 Correct 100 ms 23288 KB Output is correct
95 Correct 85 ms 22432 KB Output is correct
96 Correct 74 ms 21200 KB Output is correct
97 Correct 67 ms 15660 KB Output is correct
98 Correct 107 ms 24468 KB Output is correct
99 Correct 91 ms 20976 KB Output is correct
100 Correct 49 ms 9468 KB Output is correct
101 Correct 106 ms 23880 KB Output is correct
102 Correct 93 ms 20416 KB Output is correct
103 Correct 93 ms 20212 KB Output is correct
104 Correct 100 ms 22520 KB Output is correct