oj.uz

답안 #520907

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
520907 2022-01-31T12:59:40 Z cig32 Mergers (JOI19_mergers) C++17
48 / 100
 3000 ms 37576 KB 
#include "bits/stdc++.h"
#define int long long
using namespace std;
const int MAXN = 5e5 + 10;
vector<int> adj[MAXN];
vector<int> adj2[MAXN];
int s[MAXN];
int dsu[MAXN];
int set_of(int u) {
  if(dsu[u] == u) return u;
  return dsu[u] = set_of(dsu[u]);
}
void union_(int u, int v) {
  dsu[set_of(u)] = set_of(v);
}
int dfs(int node, int prev, int q) {
  //stat: do the ancestors contain color q
  int cnt = (s[node] == q);
  for(int x: adj[node]) {
    if(x != prev) {
      int d = dfs(x, node, q);
      cnt += d;
      if(d > 0 && set_of(node) != set_of(x)) {
        union_(node, x);
      }
    }
  }
  //ret: how many color q in subtree
  return cnt;
}
int32_t main() {
  int n,k;cin >> n >> k;
  for(int i=1;i<n;i++) {
    int a,b;cin >> a >> b;
    adj[a].push_back(b);
    adj[b].push_back(a);
  }
  for(int i=1; i<=n; i++) cin >> s[i];
  for(int i=0; i<=n; i++) dsu[i] = i;
  for(int i=1; i<=k; i++) {
    for(int j=1; j<=n; j++) {
      if(s[j] == i) {
        dfs(j, -1, i);
        break;
      }
    }
  }
  map<pair<int, int>, bool> mp;
  for(int i=1; i<=n; i++) {
    for(int x: adj[i]) {
      if(set_of(i) != set_of(x) && mp[{set_of(i), set_of(x)}] == 0) {
        mp[{set_of(i), set_of(x)}] = 1;
        mp[{set_of(x), set_of(i)}] = 1;
        adj2[set_of(i)].push_back(set_of(x));
        adj2[set_of(x)].push_back(set_of(i));
      }
    }
  }
  int s = 0;
  for(int i=1; i<=n; i++) {
    s += (adj2[i].size() == 1);
  }
  cout << (s + 1) / 2 << "\n";
}

/*
6 5
1 2
2 3
2 4
3 5
2 6
1 5 2 4 2 3 

myAnswer 3

correctAnswer 2
*/

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23672 KB Output is correct
2 Correct 13 ms 23760 KB Output is correct
3 Correct 13 ms 23708 KB Output is correct
4 Correct 14 ms 23792 KB Output is correct
5 Correct 13 ms 23688 KB Output is correct
6 Correct 14 ms 23760 KB Output is correct
7 Correct 11 ms 23752 KB Output is correct
8 Correct 13 ms 23788 KB Output is correct
9 Correct 11 ms 23740 KB Output is correct
10 Correct 11 ms 23704 KB Output is correct
11 Correct 12 ms 23680 KB Output is correct
12 Correct 14 ms 23904 KB Output is correct
13 Correct 13 ms 23692 KB Output is correct
14 Correct 12 ms 23792 KB Output is correct
15 Correct 14 ms 23792 KB Output is correct
16 Correct 15 ms 23792 KB Output is correct
17 Correct 12 ms 23760 KB Output is correct
18 Correct 14 ms 23760 KB Output is correct
19 Correct 12 ms 23784 KB Output is correct
20 Correct 12 ms 23788 KB Output is correct
21 Correct 12 ms 23760 KB Output is correct
22 Correct 14 ms 23792 KB Output is correct
23 Correct 12 ms 23684 KB Output is correct
24 Correct 13 ms 23792 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23672 KB Output is correct
2 Correct 13 ms 23760 KB Output is correct
3 Correct 13 ms 23708 KB Output is correct
4 Correct 14 ms 23792 KB Output is correct
5 Correct 13 ms 23688 KB Output is correct
6 Correct 14 ms 23760 KB Output is correct
7 Correct 11 ms 23752 KB Output is correct
8 Correct 13 ms 23788 KB Output is correct
9 Correct 11 ms 23740 KB Output is correct
10 Correct 11 ms 23704 KB Output is correct
11 Correct 12 ms 23680 KB Output is correct
12 Correct 14 ms 23904 KB Output is correct
13 Correct 13 ms 23692 KB Output is correct
14 Correct 12 ms 23792 KB Output is correct
15 Correct 14 ms 23792 KB Output is correct
16 Correct 15 ms 23792 KB Output is correct
17 Correct 12 ms 23760 KB Output is correct
18 Correct 14 ms 23760 KB Output is correct
19 Correct 12 ms 23784 KB Output is correct
20 Correct 12 ms 23788 KB Output is correct
21 Correct 12 ms 23760 KB Output is correct
22 Correct 14 ms 23792 KB Output is correct
23 Correct 12 ms 23684 KB Output is correct
24 Correct 13 ms 23792 KB Output is correct
25 Correct 13 ms 23760 KB Output is correct
26 Correct 122 ms 24232 KB Output is correct
27 Correct 22 ms 23980 KB Output is correct
28 Correct 153 ms 24392 KB Output is correct
29 Correct 142 ms 24392 KB Output is correct
30 Correct 23 ms 24044 KB Output is correct
31 Correct 14 ms 23788 KB Output is correct
32 Correct 187 ms 24188 KB Output is correct
33 Correct 16 ms 23760 KB Output is correct
34 Correct 16 ms 23972 KB Output is correct
35 Correct 136 ms 24404 KB Output is correct
36 Correct 17 ms 23888 KB Output is correct
37 Correct 75 ms 24008 KB Output is correct
38 Correct 13 ms 23760 KB Output is correct
39 Correct 77 ms 23960 KB Output is correct
40 Correct 15 ms 23888 KB Output is correct
41 Correct 15 ms 23860 KB Output is correct
42 Correct 43 ms 23988 KB Output is correct
43 Correct 22 ms 24128 KB Output is correct
44 Correct 15 ms 23768 KB Output is correct
45 Correct 171 ms 24028 KB Output is correct
46 Correct 78 ms 23988 KB Output is correct
47 Correct 13 ms 23760 KB Output is correct
48 Correct 43 ms 24032 KB Output is correct
49 Correct 75 ms 24368 KB Output is correct
50 Correct 171 ms 24500 KB Output is correct
51 Correct 43 ms 23972 KB Output is correct
52 Correct 15 ms 23888 KB Output is correct
53 Correct 39 ms 24008 KB Output is correct
54 Correct 19 ms 23992 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23672 KB Output is correct
2 Correct 13 ms 23760 KB Output is correct
3 Correct 13 ms 23708 KB Output is correct
4 Correct 14 ms 23792 KB Output is correct
5 Correct 13 ms 23688 KB Output is correct
6 Correct 14 ms 23760 KB Output is correct
7 Correct 11 ms 23752 KB Output is correct
8 Correct 13 ms 23788 KB Output is correct
9 Correct 11 ms 23740 KB Output is correct
10 Correct 11 ms 23704 KB Output is correct
11 Correct 12 ms 23680 KB Output is correct
12 Correct 14 ms 23904 KB Output is correct
13 Correct 13 ms 23692 KB Output is correct
14 Correct 12 ms 23792 KB Output is correct
15 Correct 14 ms 23792 KB Output is correct
16 Correct 15 ms 23792 KB Output is correct
17 Correct 12 ms 23760 KB Output is correct
18 Correct 14 ms 23760 KB Output is correct
19 Correct 12 ms 23784 KB Output is correct
20 Correct 12 ms 23788 KB Output is correct
21 Correct 12 ms 23760 KB Output is correct
22 Correct 14 ms 23792 KB Output is correct
23 Correct 12 ms 23684 KB Output is correct
24 Correct 13 ms 23792 KB Output is correct
25 Correct 15 ms 23796 KB Output is correct
26 Correct 160 ms 31104 KB Output is correct
27 Correct 384 ms 30440 KB Output is correct
28 Correct 18 ms 23932 KB Output is correct
29 Correct 16 ms 23728 KB Output is correct
30 Correct 13 ms 23796 KB Output is correct
31 Correct 331 ms 30516 KB Output is correct
32 Correct 15 ms 24016 KB Output is correct
33 Correct 745 ms 37576 KB Output is correct
34 Correct 480 ms 30528 KB Output is correct
35 Correct 18 ms 23888 KB Output is correct
36 Correct 476 ms 30972 KB Output is correct
37 Correct 16 ms 23888 KB Output is correct
38 Correct 15 ms 23932 KB Output is correct
39 Correct 141 ms 30672 KB Output is correct
40 Correct 14 ms 24136 KB Output is correct
41 Correct 118 ms 30380 KB Output is correct
42 Correct 716 ms 34712 KB Output is correct
43 Correct 14 ms 23760 KB Output is correct
44 Correct 118 ms 37360 KB Output is correct
45 Correct 566 ms 34880 KB Output is correct
46 Correct 17 ms 24016 KB Output is correct
47 Correct 24 ms 23888 KB Output is correct

Subtask #4
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 136 ms 31192 KB Output is correct
2 Execution timed out 3095 ms 30968 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23672 KB Output is correct
2 Correct 13 ms 23760 KB Output is correct
3 Correct 13 ms 23708 KB Output is correct
4 Correct 14 ms 23792 KB Output is correct
5 Correct 13 ms 23688 KB Output is correct
6 Correct 14 ms 23760 KB Output is correct
7 Correct 11 ms 23752 KB Output is correct
8 Correct 13 ms 23788 KB Output is correct
9 Correct 11 ms 23740 KB Output is correct
10 Correct 11 ms 23704 KB Output is correct
11 Correct 12 ms 23680 KB Output is correct
12 Correct 14 ms 23904 KB Output is correct
13 Correct 13 ms 23692 KB Output is correct
14 Correct 12 ms 23792 KB Output is correct
15 Correct 14 ms 23792 KB Output is correct
16 Correct 15 ms 23792 KB Output is correct
17 Correct 12 ms 23760 KB Output is correct
18 Correct 14 ms 23760 KB Output is correct
19 Correct 12 ms 23784 KB Output is correct
20 Correct 12 ms 23788 KB Output is correct
21 Correct 12 ms 23760 KB Output is correct
22 Correct 14 ms 23792 KB Output is correct
23 Correct 12 ms 23684 KB Output is correct
24 Correct 13 ms 23792 KB Output is correct
25 Correct 13 ms 23760 KB Output is correct
26 Correct 122 ms 24232 KB Output is correct
27 Correct 22 ms 23980 KB Output is correct
28 Correct 153 ms 24392 KB Output is correct
29 Correct 142 ms 24392 KB Output is correct
30 Correct 23 ms 24044 KB Output is correct
31 Correct 14 ms 23788 KB Output is correct
32 Correct 187 ms 24188 KB Output is correct
33 Correct 16 ms 23760 KB Output is correct
34 Correct 16 ms 23972 KB Output is correct
35 Correct 136 ms 24404 KB Output is correct
36 Correct 17 ms 23888 KB Output is correct
37 Correct 75 ms 24008 KB Output is correct
38 Correct 13 ms 23760 KB Output is correct
39 Correct 77 ms 23960 KB Output is correct
40 Correct 15 ms 23888 KB Output is correct
41 Correct 15 ms 23860 KB Output is correct
42 Correct 43 ms 23988 KB Output is correct
43 Correct 22 ms 24128 KB Output is correct
44 Correct 15 ms 23768 KB Output is correct
45 Correct 171 ms 24028 KB Output is correct
46 Correct 78 ms 23988 KB Output is correct
47 Correct 13 ms 23760 KB Output is correct
48 Correct 43 ms 24032 KB Output is correct
49 Correct 75 ms 24368 KB Output is correct
50 Correct 171 ms 24500 KB Output is correct
51 Correct 43 ms 23972 KB Output is correct
52 Correct 15 ms 23888 KB Output is correct
53 Correct 39 ms 24008 KB Output is correct
54 Correct 19 ms 23992 KB Output is correct
55 Correct 15 ms 23796 KB Output is correct
56 Correct 160 ms 31104 KB Output is correct
57 Correct 384 ms 30440 KB Output is correct
58 Correct 18 ms 23932 KB Output is correct
59 Correct 16 ms 23728 KB Output is correct
60 Correct 13 ms 23796 KB Output is correct
61 Correct 331 ms 30516 KB Output is correct
62 Correct 15 ms 24016 KB Output is correct
63 Correct 745 ms 37576 KB Output is correct
64 Correct 480 ms 30528 KB Output is correct
65 Correct 18 ms 23888 KB Output is correct
66 Correct 476 ms 30972 KB Output is correct
67 Correct 16 ms 23888 KB Output is correct
68 Correct 15 ms 23932 KB Output is correct
69 Correct 141 ms 30672 KB Output is correct
70 Correct 14 ms 24136 KB Output is correct
71 Correct 118 ms 30380 KB Output is correct
72 Correct 716 ms 34712 KB Output is correct
73 Correct 14 ms 23760 KB Output is correct
74 Correct 118 ms 37360 KB Output is correct
75 Correct 566 ms 34880 KB Output is correct
76 Correct 17 ms 24016 KB Output is correct
77 Correct 24 ms 23888 KB Output is correct
78 Correct 136 ms 31192 KB Output is correct
79 Execution timed out 3095 ms 30968 KB Time limit exceeded
80 Halted 0 ms 0 KB -