oj.uz

답안 #138081

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
138081 2019-07-29T09:54:55 Z triplem5ds Mergers (JOI19_mergers) C++14
100 / 100
 1857 ms 82244 KB 
#pragma GCC optimize ("O3")
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define F first
#define S second
using ll = long long;
using ii = pair<int, int>;
const int N = 5e5 + 5, mod = 1e9 + 7;
int n, k;
std::vector<int> adj[N];
int in[N], out[N], ord[N], lvl[N], sz[N], timer;
int cnt[N];
int cur[N];
int col[N];
int freq[N];
void dfs0(int u){
  sz[u] = 1;
  in[u] = timer;
  for(auto v : adj[u]){
    lvl[v] = lvl[u] + 1;
    adj[v].erase(find(adj[v].begin(), adj[v].end(), u));
    dfs0(v);
    sz[u] += sz[v];
  }
  ord[timer] = u;
  out[u] = timer++;
}
bool f;
int ans[N];
bool isFaulty[N];
int dfs1(int u, bool keep) {
//  cout << u << endl;
  int mx = -1, bigChild = -1;
  for(auto v : adj[u])if(sz[v] > mx){
    mx = sz[v], bigChild = v;
  }
  if(bigChild == -1 && u != 1){
    cur[u] = k - 1;
    cnt[col[u]]++;
    cur[u] += (cnt[col[u]] == freq[col[u]]);
    int ret = cur[u] == k;
//    cout u << ' ' << ret << endl;
    // cout << freq[col[u]] << ' ' << cnt[col[u]] << ' ' << cur[u] << ' ' << ret  << '\n';
    if(!keep){
      cur[u] -= (cnt[col[u]] == freq[col[u]]);
      cnt[col[u]]--;
      cur[u] += (cnt[col[u]] == 0);
    }
    // cout << u << ' ' << ret << '\n';
    isFaulty[u] = ret;
    return ans[u] = ret;
  }
  int ret = 0;
  for(auto v : adj[u])if(v != bigChild){
    ret += dfs1(v, 0);
  }
  // cout << u << ' ' << ret << '\n';
  ret += dfs1(bigChild, 1);
  cur[u] = cur[bigChild];
  for(auto v : adj[u])
  if(v != bigChild){
    for(int x = in[v]; x <= out[v]; x++){
      cur[u] -= (cnt[col[ord[x]]] == 0);
      cnt[col[ord[x]]]++;
      cur[u] += (cnt[col[ord[x]]] == freq[col[ord[x]]]);
    }
  }
  cur[u] -= (cnt[col[u]] == 0);
  cnt[col[u]]++;
  cur[u] += (cnt[col[u]] == freq[col[u]]);
  if(!ret && u != 1){
    ret = cur[u] == k;
  }
  isFaulty[u] = (cur[u] == k);
  if(!keep){
    for(int x = in[u]; x <= out[u]; x++){
      cur[u] -= (cnt[col[ord[x]]] == freq[col[ord[x]]]);
      cnt[col[ord[x]]]--;
      cur[u] += (cnt[col[ord[x]]] == 0);
    }
  }
  return ans[u] = ret;
}
int main(){

  cin >> n >> k;

  for(int i = 0, u, v; i < n - 1; i++){
    cin >> u >> v;
    adj[u].pb(v);
    adj[v].pb(u);
  }
  for(int i = 1; i <= n; i++){
    cin >> col[i];
    freq[col[i]]++;
  }
  dfs0(1);
  int out = dfs1(1, 0) + 1;
//  cout << out << '\n';
  if(min(n,k) == 1){
    cout << 0 << endl;
    return 0;
  }
  for(int i = 2; i <= n; i++)
  if(isFaulty[i]){
    int tot = 0;
    for(auto v : adj[i])tot += ans[v];
    if(tot == out - 1){
      out++;
      break;
    }
  }

  cout << out / 2 << '\n';

  return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 12152 KB Output is correct
2 Correct 14 ms 12072 KB Output is correct
3 Correct 14 ms 12152 KB Output is correct
4 Correct 14 ms 12152 KB Output is correct
5 Correct 14 ms 12152 KB Output is correct
6 Correct 16 ms 12152 KB Output is correct
7 Correct 16 ms 12152 KB Output is correct
8 Correct 14 ms 12152 KB Output is correct
9 Correct 14 ms 12152 KB Output is correct
10 Correct 14 ms 12152 KB Output is correct
11 Correct 14 ms 12152 KB Output is correct
12 Correct 14 ms 12152 KB Output is correct
13 Correct 14 ms 12152 KB Output is correct
14 Correct 14 ms 12148 KB Output is correct
15 Correct 14 ms 12152 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 16 ms 12152 KB Output is correct
18 Correct 18 ms 12152 KB Output is correct
19 Correct 14 ms 12152 KB Output is correct
20 Correct 14 ms 12152 KB Output is correct
21 Correct 14 ms 12152 KB Output is correct
22 Correct 14 ms 12280 KB Output is correct
23 Correct 14 ms 12188 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 12152 KB Output is correct
2 Correct 14 ms 12072 KB Output is correct
3 Correct 14 ms 12152 KB Output is correct
4 Correct 14 ms 12152 KB Output is correct
5 Correct 14 ms 12152 KB Output is correct
6 Correct 16 ms 12152 KB Output is correct
7 Correct 16 ms 12152 KB Output is correct
8 Correct 14 ms 12152 KB Output is correct
9 Correct 14 ms 12152 KB Output is correct
10 Correct 14 ms 12152 KB Output is correct
11 Correct 14 ms 12152 KB Output is correct
12 Correct 14 ms 12152 KB Output is correct
13 Correct 14 ms 12152 KB Output is correct
14 Correct 14 ms 12148 KB Output is correct
15 Correct 14 ms 12152 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 16 ms 12152 KB Output is correct
18 Correct 18 ms 12152 KB Output is correct
19 Correct 14 ms 12152 KB Output is correct
20 Correct 14 ms 12152 KB Output is correct
21 Correct 14 ms 12152 KB Output is correct
22 Correct 14 ms 12280 KB Output is correct
23 Correct 14 ms 12188 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 14 ms 12156 KB Output is correct
26 Correct 19 ms 12408 KB Output is correct
27 Correct 18 ms 12408 KB Output is correct
28 Correct 19 ms 12536 KB Output is correct
29 Correct 19 ms 12408 KB Output is correct
30 Correct 19 ms 12408 KB Output is correct
31 Correct 14 ms 12152 KB Output is correct
32 Correct 19 ms 12664 KB Output is correct
33 Correct 14 ms 12152 KB Output is correct
34 Correct 18 ms 12408 KB Output is correct
35 Correct 19 ms 12380 KB Output is correct
36 Correct 18 ms 12408 KB Output is correct
37 Correct 19 ms 12420 KB Output is correct
38 Correct 14 ms 12152 KB Output is correct
39 Correct 19 ms 12408 KB Output is correct
40 Correct 18 ms 12408 KB Output is correct
41 Correct 18 ms 12408 KB Output is correct
42 Correct 19 ms 12536 KB Output is correct
43 Correct 18 ms 12664 KB Output is correct
44 Correct 14 ms 12152 KB Output is correct
45 Correct 19 ms 12536 KB Output is correct
46 Correct 19 ms 12452 KB Output is correct
47 Correct 14 ms 12152 KB Output is correct
48 Correct 19 ms 12408 KB Output is correct
49 Correct 18 ms 12412 KB Output is correct
50 Correct 19 ms 12536 KB Output is correct
51 Correct 19 ms 12408 KB Output is correct
52 Correct 18 ms 12408 KB Output is correct
53 Correct 19 ms 12408 KB Output is correct
54 Correct 18 ms 12380 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 12152 KB Output is correct
2 Correct 14 ms 12072 KB Output is correct
3 Correct 14 ms 12152 KB Output is correct
4 Correct 14 ms 12152 KB Output is correct
5 Correct 14 ms 12152 KB Output is correct
6 Correct 16 ms 12152 KB Output is correct
7 Correct 16 ms 12152 KB Output is correct
8 Correct 14 ms 12152 KB Output is correct
9 Correct 14 ms 12152 KB Output is correct
10 Correct 14 ms 12152 KB Output is correct
11 Correct 14 ms 12152 KB Output is correct
12 Correct 14 ms 12152 KB Output is correct
13 Correct 14 ms 12152 KB Output is correct
14 Correct 14 ms 12148 KB Output is correct
15 Correct 14 ms 12152 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 16 ms 12152 KB Output is correct
18 Correct 18 ms 12152 KB Output is correct
19 Correct 14 ms 12152 KB Output is correct
20 Correct 14 ms 12152 KB Output is correct
21 Correct 14 ms 12152 KB Output is correct
22 Correct 14 ms 12280 KB Output is correct
23 Correct 14 ms 12188 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 14 ms 12152 KB Output is correct
26 Correct 204 ms 20368 KB Output is correct
27 Correct 225 ms 20188 KB Output is correct
28 Correct 18 ms 12408 KB Output is correct
29 Correct 16 ms 12152 KB Output is correct
30 Correct 14 ms 12152 KB Output is correct
31 Correct 232 ms 20088 KB Output is correct
32 Correct 17 ms 12304 KB Output is correct
33 Correct 235 ms 28700 KB Output is correct
34 Correct 215 ms 20168 KB Output is correct
35 Correct 19 ms 12412 KB Output is correct
36 Correct 229 ms 20988 KB Output is correct
37 Correct 18 ms 12408 KB Output is correct
38 Correct 18 ms 12408 KB Output is correct
39 Correct 186 ms 20332 KB Output is correct
40 Correct 21 ms 12668 KB Output is correct
41 Correct 237 ms 20084 KB Output is correct
42 Correct 219 ms 22904 KB Output is correct
43 Correct 14 ms 12152 KB Output is correct
44 Correct 236 ms 29020 KB Output is correct
45 Correct 222 ms 24488 KB Output is correct
46 Correct 18 ms 12408 KB Output is correct
47 Correct 18 ms 12408 KB Output is correct

Subtask #4
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 186 ms 18928 KB Output is correct
2 Correct 210 ms 21460 KB Output is correct
3 Correct 19 ms 12408 KB Output is correct
4 Correct 18 ms 12408 KB Output is correct
5 Correct 13 ms 12152 KB Output is correct
6 Correct 14 ms 12152 KB Output is correct
7 Correct 18 ms 12408 KB Output is correct
8 Correct 240 ms 20728 KB Output is correct
9 Correct 18 ms 12408 KB Output is correct
10 Correct 215 ms 20216 KB Output is correct
11 Correct 14 ms 12152 KB Output is correct
12 Correct 232 ms 20352 KB Output is correct
13 Correct 242 ms 20728 KB Output is correct
14 Correct 242 ms 21244 KB Output is correct
15 Correct 183 ms 20464 KB Output is correct
16 Correct 21 ms 12408 KB Output is correct
17 Correct 16 ms 12152 KB Output is correct
18 Correct 223 ms 21300 KB Output is correct
19 Correct 257 ms 25848 KB Output is correct
20 Correct 21 ms 12408 KB Output is correct
21 Correct 26 ms 12152 KB Output is correct
22 Correct 235 ms 21008 KB Output is correct
23 Correct 18 ms 12408 KB Output is correct
24 Correct 237 ms 20216 KB Output is correct
25 Correct 240 ms 24252 KB Output is correct
26 Correct 19 ms 12408 KB Output is correct
27 Correct 19 ms 12536 KB Output is correct
28 Correct 18 ms 12408 KB Output is correct
29 Correct 18 ms 12408 KB Output is correct
30 Correct 18 ms 12408 KB Output is correct

Subtask #5
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 12152 KB Output is correct
2 Correct 14 ms 12072 KB Output is correct
3 Correct 14 ms 12152 KB Output is correct
4 Correct 14 ms 12152 KB Output is correct
5 Correct 14 ms 12152 KB Output is correct
6 Correct 16 ms 12152 KB Output is correct
7 Correct 16 ms 12152 KB Output is correct
8 Correct 14 ms 12152 KB Output is correct
9 Correct 14 ms 12152 KB Output is correct
10 Correct 14 ms 12152 KB Output is correct
11 Correct 14 ms 12152 KB Output is correct
12 Correct 14 ms 12152 KB Output is correct
13 Correct 14 ms 12152 KB Output is correct
14 Correct 14 ms 12148 KB Output is correct
15 Correct 14 ms 12152 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 16 ms 12152 KB Output is correct
18 Correct 18 ms 12152 KB Output is correct
19 Correct 14 ms 12152 KB Output is correct
20 Correct 14 ms 12152 KB Output is correct
21 Correct 14 ms 12152 KB Output is correct
22 Correct 14 ms 12280 KB Output is correct
23 Correct 14 ms 12188 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 14 ms 12156 KB Output is correct
26 Correct 19 ms 12408 KB Output is correct
27 Correct 18 ms 12408 KB Output is correct
28 Correct 19 ms 12536 KB Output is correct
29 Correct 19 ms 12408 KB Output is correct
30 Correct 19 ms 12408 KB Output is correct
31 Correct 14 ms 12152 KB Output is correct
32 Correct 19 ms 12664 KB Output is correct
33 Correct 14 ms 12152 KB Output is correct
34 Correct 18 ms 12408 KB Output is correct
35 Correct 19 ms 12380 KB Output is correct
36 Correct 18 ms 12408 KB Output is correct
37 Correct 19 ms 12420 KB Output is correct
38 Correct 14 ms 12152 KB Output is correct
39 Correct 19 ms 12408 KB Output is correct
40 Correct 18 ms 12408 KB Output is correct
41 Correct 18 ms 12408 KB Output is correct
42 Correct 19 ms 12536 KB Output is correct
43 Correct 18 ms 12664 KB Output is correct
44 Correct 14 ms 12152 KB Output is correct
45 Correct 19 ms 12536 KB Output is correct
46 Correct 19 ms 12452 KB Output is correct
47 Correct 14 ms 12152 KB Output is correct
48 Correct 19 ms 12408 KB Output is correct
49 Correct 18 ms 12412 KB Output is correct
50 Correct 19 ms 12536 KB Output is correct
51 Correct 19 ms 12408 KB Output is correct
52 Correct 18 ms 12408 KB Output is correct
53 Correct 19 ms 12408 KB Output is correct
54 Correct 18 ms 12380 KB Output is correct
55 Correct 14 ms 12152 KB Output is correct
56 Correct 204 ms 20368 KB Output is correct
57 Correct 225 ms 20188 KB Output is correct
58 Correct 18 ms 12408 KB Output is correct
59 Correct 16 ms 12152 KB Output is correct
60 Correct 14 ms 12152 KB Output is correct
61 Correct 232 ms 20088 KB Output is correct
62 Correct 17 ms 12304 KB Output is correct
63 Correct 235 ms 28700 KB Output is correct
64 Correct 215 ms 20168 KB Output is correct
65 Correct 19 ms 12412 KB Output is correct
66 Correct 229 ms 20988 KB Output is correct
67 Correct 18 ms 12408 KB Output is correct
68 Correct 18 ms 12408 KB Output is correct
69 Correct 186 ms 20332 KB Output is correct
70 Correct 21 ms 12668 KB Output is correct
71 Correct 237 ms 20084 KB Output is correct
72 Correct 219 ms 22904 KB Output is correct
73 Correct 14 ms 12152 KB Output is correct
74 Correct 236 ms 29020 KB Output is correct
75 Correct 222 ms 24488 KB Output is correct
76 Correct 18 ms 12408 KB Output is correct
77 Correct 18 ms 12408 KB Output is correct
78 Correct 186 ms 18928 KB Output is correct
79 Correct 210 ms 21460 KB Output is correct
80 Correct 19 ms 12408 KB Output is correct
81 Correct 18 ms 12408 KB Output is correct
82 Correct 13 ms 12152 KB Output is correct
83 Correct 14 ms 12152 KB Output is correct
84 Correct 18 ms 12408 KB Output is correct
85 Correct 240 ms 20728 KB Output is correct
86 Correct 18 ms 12408 KB Output is correct
87 Correct 215 ms 20216 KB Output is correct
88 Correct 14 ms 12152 KB Output is correct
89 Correct 232 ms 20352 KB Output is correct
90 Correct 242 ms 20728 KB Output is correct
91 Correct 242 ms 21244 KB Output is correct
92 Correct 183 ms 20464 KB Output is correct
93 Correct 21 ms 12408 KB Output is correct
94 Correct 16 ms 12152 KB Output is correct
95 Correct 223 ms 21300 KB Output is correct
96 Correct 257 ms 25848 KB Output is correct
97 Correct 21 ms 12408 KB Output is correct
98 Correct 26 ms 12152 KB Output is correct
99 Correct 235 ms 21008 KB Output is correct
100 Correct 18 ms 12408 KB Output is correct
101 Correct 237 ms 20216 KB Output is correct
102 Correct 240 ms 24252 KB Output is correct
103 Correct 19 ms 12408 KB Output is correct
104 Correct 19 ms 12536 KB Output is correct
105 Correct 18 ms 12408 KB Output is correct
106 Correct 18 ms 12408 KB Output is correct
107 Correct 18 ms 12408 KB Output is correct
108 Correct 1222 ms 49952 KB Output is correct
109 Correct 1409 ms 68704 KB Output is correct
110 Correct 1359 ms 82244 KB Output is correct
111 Correct 1642 ms 78676 KB Output is correct
112 Correct 1857 ms 66900 KB Output is correct
113 Correct 1297 ms 51968 KB Output is correct
114 Correct 1333 ms 47140 KB Output is correct
115 Correct 1412 ms 47248 KB Output is correct
116 Correct 1484 ms 47736 KB Output is correct
117 Correct 1566 ms 50564 KB Output is correct
118 Correct 1342 ms 46448 KB Output is correct
119 Correct 1540 ms 50824 KB Output is correct
120 Correct 1574 ms 67388 KB Output is correct
121 Correct 1532 ms 50552 KB Output is correct
122 Correct 1493 ms 49400 KB Output is correct
123 Correct 1232 ms 51880 KB Output is correct
124 Correct 1553 ms 50072 KB Output is correct