oj.uz

Submission #682031

# Submission time Handle Problem Language Result Execution time Memory
682031 2023-01-15T10:37:02 Z ParsaS Mergers (JOI19_mergers) C++17
100 / 100
 1141 ms 102928 KB 
// In the name of God
//-MILY-
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define mp make_pair
typedef long long ll;
const int N = 5e5 + 5;
int n, k;
vector<int> adj[N], vec[N];
int mn[N], tin[N], tout[N], T;
int ans, h[N], cnt, c[N];
bool vis[N], mark[N];

void dfs(int v, int p) {
    tin[v] = ++T;
    for (auto u : adj[v]) {
        if (u == p)
            continue;
        dfs(u, v);
    }
    tout[v] = ++T;
}
void dfs2(int v, int p) {
    vis[v] = true;
    mn[v] = h[v];
    bool tmp = false;
    for (auto u : adj[v]) {
        if (!vis[u]) {
            h[u] = h[v] + 1;
            dfs2(u, v);
            if (mn[u] > h[v]) {
                mark[u] = true;
                cnt++;
            }
            mn[v] = min(mn[v], mn[u]);
        }
        else if (u != p || tmp) {
            mn[v] = min(mn[v], h[u]);
        }
        if (u == p)
            tmp = true;
    }
}
void dfs3(int v) {
    vis[v] = true;
    for (auto u : adj[v]) {
        if (!vis[u]) {
            dfs3(u);
            c[v] += c[u];
            if (mark[u])
                c[v]++;
        }
    }
    ans += mark[v] && (c[v] == 0 || c[v] == cnt - 1);
}

void solve() {
    cin >> n >> k;
    for (int i = 0; i < n - 1; i++) {
        int v, u; cin >> v >> u;
        adj[v].pb(u), adj[u].pb(v);
    }
    for (int i = 1; i <= n; i++) {
        int s; cin >> s;
        vec[s].pb(i);
    }
    dfs(1, 0);
    for (int i = 1; i <= k; i++) {
        vector<pair<int, int> > V;
        for (auto v : vec[i]) {
            V.pb(mp(tin[v], v));
        }
        sort(V.begin(), V.end());
        for (int i = 0; i < (int)V.size(); i++) {
            int j = (i + 1) % (int)V.size();
            adj[V[i].se].pb(V[j].se);
            adj[V[j].se].pb(V[i].se);
        }
    }
    dfs2(1, 0);
    memset(vis, 0, sizeof vis);
    dfs3(1);
    cout << (ans + 1) / 2 << '\n';
}
int32_t main() {
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    solve();
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 24276 KB Output is correct
2 Correct 13 ms 24384 KB Output is correct
3 Correct 13 ms 24280 KB Output is correct
4 Correct 13 ms 24308 KB Output is correct
5 Correct 12 ms 24340 KB Output is correct
6 Correct 12 ms 24228 KB Output is correct
7 Correct 13 ms 24320 KB Output is correct
8 Correct 13 ms 24276 KB Output is correct
9 Correct 12 ms 24276 KB Output is correct
10 Correct 13 ms 24276 KB Output is correct
11 Correct 13 ms 24276 KB Output is correct
12 Correct 15 ms 24276 KB Output is correct
13 Correct 13 ms 24248 KB Output is correct
14 Correct 14 ms 24284 KB Output is correct
15 Correct 13 ms 24276 KB Output is correct
16 Correct 13 ms 24276 KB Output is correct
17 Correct 13 ms 24244 KB Output is correct
18 Correct 13 ms 24276 KB Output is correct
19 Correct 13 ms 24208 KB Output is correct
20 Correct 12 ms 24324 KB Output is correct
21 Correct 15 ms 24244 KB Output is correct
22 Correct 13 ms 24324 KB Output is correct
23 Correct 13 ms 24320 KB Output is correct
24 Correct 13 ms 24276 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 24276 KB Output is correct
2 Correct 13 ms 24384 KB Output is correct
3 Correct 13 ms 24280 KB Output is correct
4 Correct 13 ms 24308 KB Output is correct
5 Correct 12 ms 24340 KB Output is correct
6 Correct 12 ms 24228 KB Output is correct
7 Correct 13 ms 24320 KB Output is correct
8 Correct 13 ms 24276 KB Output is correct
9 Correct 12 ms 24276 KB Output is correct
10 Correct 13 ms 24276 KB Output is correct
11 Correct 13 ms 24276 KB Output is correct
12 Correct 15 ms 24276 KB Output is correct
13 Correct 13 ms 24248 KB Output is correct
14 Correct 14 ms 24284 KB Output is correct
15 Correct 13 ms 24276 KB Output is correct
16 Correct 13 ms 24276 KB Output is correct
17 Correct 13 ms 24244 KB Output is correct
18 Correct 13 ms 24276 KB Output is correct
19 Correct 13 ms 24208 KB Output is correct
20 Correct 12 ms 24324 KB Output is correct
21 Correct 15 ms 24244 KB Output is correct
22 Correct 13 ms 24324 KB Output is correct
23 Correct 13 ms 24320 KB Output is correct
24 Correct 13 ms 24276 KB Output is correct
25 Correct 13 ms 24256 KB Output is correct
26 Correct 14 ms 24640 KB Output is correct
27 Correct 14 ms 24520 KB Output is correct
28 Correct 15 ms 24660 KB Output is correct
29 Correct 17 ms 24660 KB Output is correct
30 Correct 15 ms 24716 KB Output is correct
31 Correct 13 ms 24276 KB Output is correct
32 Correct 14 ms 24720 KB Output is correct
33 Correct 13 ms 24320 KB Output is correct
34 Correct 14 ms 24464 KB Output is correct
35 Correct 17 ms 24644 KB Output is correct
36 Correct 15 ms 24544 KB Output is correct
37 Correct 17 ms 24660 KB Output is correct
38 Correct 15 ms 24276 KB Output is correct
39 Correct 14 ms 24720 KB Output is correct
40 Correct 17 ms 24832 KB Output is correct
41 Correct 14 ms 24532 KB Output is correct
42 Correct 14 ms 24556 KB Output is correct
43 Correct 15 ms 24716 KB Output is correct
44 Correct 13 ms 24276 KB Output is correct
45 Correct 18 ms 24660 KB Output is correct
46 Correct 15 ms 24532 KB Output is correct
47 Correct 13 ms 24220 KB Output is correct
48 Correct 15 ms 24480 KB Output is correct
49 Correct 16 ms 24588 KB Output is correct
50 Correct 15 ms 24608 KB Output is correct
51 Correct 14 ms 24588 KB Output is correct
52 Correct 15 ms 24460 KB Output is correct
53 Correct 14 ms 24592 KB Output is correct
54 Correct 16 ms 24748 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 24276 KB Output is correct
2 Correct 13 ms 24384 KB Output is correct
3 Correct 13 ms 24280 KB Output is correct
4 Correct 13 ms 24308 KB Output is correct
5 Correct 12 ms 24340 KB Output is correct
6 Correct 12 ms 24228 KB Output is correct
7 Correct 13 ms 24320 KB Output is correct
8 Correct 13 ms 24276 KB Output is correct
9 Correct 12 ms 24276 KB Output is correct
10 Correct 13 ms 24276 KB Output is correct
11 Correct 13 ms 24276 KB Output is correct
12 Correct 15 ms 24276 KB Output is correct
13 Correct 13 ms 24248 KB Output is correct
14 Correct 14 ms 24284 KB Output is correct
15 Correct 13 ms 24276 KB Output is correct
16 Correct 13 ms 24276 KB Output is correct
17 Correct 13 ms 24244 KB Output is correct
18 Correct 13 ms 24276 KB Output is correct
19 Correct 13 ms 24208 KB Output is correct
20 Correct 12 ms 24324 KB Output is correct
21 Correct 15 ms 24244 KB Output is correct
22 Correct 13 ms 24324 KB Output is correct
23 Correct 13 ms 24320 KB Output is correct
24 Correct 13 ms 24276 KB Output is correct
25 Correct 13 ms 24308 KB Output is correct
26 Correct 88 ms 31980 KB Output is correct
27 Correct 100 ms 37432 KB Output is correct
28 Correct 15 ms 24536 KB Output is correct
29 Correct 13 ms 24328 KB Output is correct
30 Correct 13 ms 24276 KB Output is correct
31 Correct 91 ms 33048 KB Output is correct
32 Correct 15 ms 24532 KB Output is correct
33 Correct 149 ms 39196 KB Output is correct
34 Correct 97 ms 33996 KB Output is correct
35 Correct 15 ms 24532 KB Output is correct
36 Correct 100 ms 32460 KB Output is correct
37 Correct 19 ms 24788 KB Output is correct
38 Correct 17 ms 24532 KB Output is correct
39 Correct 83 ms 31940 KB Output is correct
40 Correct 15 ms 24744 KB Output is correct
41 Correct 104 ms 39840 KB Output is correct
42 Correct 109 ms 38048 KB Output is correct
43 Correct 13 ms 24276 KB Output is correct
44 Correct 102 ms 39012 KB Output is correct
45 Correct 119 ms 38520 KB Output is correct
46 Correct 17 ms 24532 KB Output is correct
47 Correct 17 ms 24652 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 83 ms 30464 KB Output is correct
2 Correct 93 ms 32540 KB Output is correct
3 Correct 14 ms 24532 KB Output is correct
4 Correct 15 ms 24532 KB Output is correct
5 Correct 17 ms 24276 KB Output is correct
6 Correct 13 ms 24276 KB Output is correct
7 Correct 14 ms 24464 KB Output is correct
8 Correct 119 ms 33688 KB Output is correct
9 Correct 15 ms 24612 KB Output is correct
10 Correct 100 ms 32460 KB Output is correct
11 Correct 17 ms 24332 KB Output is correct
12 Correct 118 ms 31708 KB Output is correct
13 Correct 122 ms 33644 KB Output is correct
14 Correct 135 ms 35352 KB Output is correct
15 Correct 74 ms 31872 KB Output is correct
16 Correct 16 ms 24532 KB Output is correct
17 Correct 14 ms 24276 KB Output is correct
18 Correct 125 ms 34352 KB Output is correct
19 Correct 121 ms 38392 KB Output is correct
20 Correct 14 ms 24532 KB Output is correct
21 Correct 14 ms 24324 KB Output is correct
22 Correct 103 ms 33048 KB Output is correct
23 Correct 14 ms 24580 KB Output is correct
24 Correct 110 ms 32604 KB Output is correct
25 Correct 147 ms 38632 KB Output is correct
26 Correct 14 ms 24528 KB Output is correct
27 Correct 14 ms 24660 KB Output is correct
28 Correct 14 ms 24532 KB Output is correct
29 Correct 14 ms 24532 KB Output is correct
30 Correct 15 ms 24532 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 24276 KB Output is correct
2 Correct 13 ms 24384 KB Output is correct
3 Correct 13 ms 24280 KB Output is correct
4 Correct 13 ms 24308 KB Output is correct
5 Correct 12 ms 24340 KB Output is correct
6 Correct 12 ms 24228 KB Output is correct
7 Correct 13 ms 24320 KB Output is correct
8 Correct 13 ms 24276 KB Output is correct
9 Correct 12 ms 24276 KB Output is correct
10 Correct 13 ms 24276 KB Output is correct
11 Correct 13 ms 24276 KB Output is correct
12 Correct 15 ms 24276 KB Output is correct
13 Correct 13 ms 24248 KB Output is correct
14 Correct 14 ms 24284 KB Output is correct
15 Correct 13 ms 24276 KB Output is correct
16 Correct 13 ms 24276 KB Output is correct
17 Correct 13 ms 24244 KB Output is correct
18 Correct 13 ms 24276 KB Output is correct
19 Correct 13 ms 24208 KB Output is correct
20 Correct 12 ms 24324 KB Output is correct
21 Correct 15 ms 24244 KB Output is correct
22 Correct 13 ms 24324 KB Output is correct
23 Correct 13 ms 24320 KB Output is correct
24 Correct 13 ms 24276 KB Output is correct
25 Correct 13 ms 24256 KB Output is correct
26 Correct 14 ms 24640 KB Output is correct
27 Correct 14 ms 24520 KB Output is correct
28 Correct 15 ms 24660 KB Output is correct
29 Correct 17 ms 24660 KB Output is correct
30 Correct 15 ms 24716 KB Output is correct
31 Correct 13 ms 24276 KB Output is correct
32 Correct 14 ms 24720 KB Output is correct
33 Correct 13 ms 24320 KB Output is correct
34 Correct 14 ms 24464 KB Output is correct
35 Correct 17 ms 24644 KB Output is correct
36 Correct 15 ms 24544 KB Output is correct
37 Correct 17 ms 24660 KB Output is correct
38 Correct 15 ms 24276 KB Output is correct
39 Correct 14 ms 24720 KB Output is correct
40 Correct 17 ms 24832 KB Output is correct
41 Correct 14 ms 24532 KB Output is correct
42 Correct 14 ms 24556 KB Output is correct
43 Correct 15 ms 24716 KB Output is correct
44 Correct 13 ms 24276 KB Output is correct
45 Correct 18 ms 24660 KB Output is correct
46 Correct 15 ms 24532 KB Output is correct
47 Correct 13 ms 24220 KB Output is correct
48 Correct 15 ms 24480 KB Output is correct
49 Correct 16 ms 24588 KB Output is correct
50 Correct 15 ms 24608 KB Output is correct
51 Correct 14 ms 24588 KB Output is correct
52 Correct 15 ms 24460 KB Output is correct
53 Correct 14 ms 24592 KB Output is correct
54 Correct 16 ms 24748 KB Output is correct
55 Correct 13 ms 24308 KB Output is correct
56 Correct 88 ms 31980 KB Output is correct
57 Correct 100 ms 37432 KB Output is correct
58 Correct 15 ms 24536 KB Output is correct
59 Correct 13 ms 24328 KB Output is correct
60 Correct 13 ms 24276 KB Output is correct
61 Correct 91 ms 33048 KB Output is correct
62 Correct 15 ms 24532 KB Output is correct
63 Correct 149 ms 39196 KB Output is correct
64 Correct 97 ms 33996 KB Output is correct
65 Correct 15 ms 24532 KB Output is correct
66 Correct 100 ms 32460 KB Output is correct
67 Correct 19 ms 24788 KB Output is correct
68 Correct 17 ms 24532 KB Output is correct
69 Correct 83 ms 31940 KB Output is correct
70 Correct 15 ms 24744 KB Output is correct
71 Correct 104 ms 39840 KB Output is correct
72 Correct 109 ms 38048 KB Output is correct
73 Correct 13 ms 24276 KB Output is correct
74 Correct 102 ms 39012 KB Output is correct
75 Correct 119 ms 38520 KB Output is correct
76 Correct 17 ms 24532 KB Output is correct
77 Correct 17 ms 24652 KB Output is correct
78 Correct 83 ms 30464 KB Output is correct
79 Correct 93 ms 32540 KB Output is correct
80 Correct 14 ms 24532 KB Output is correct
81 Correct 15 ms 24532 KB Output is correct
82 Correct 17 ms 24276 KB Output is correct
83 Correct 13 ms 24276 KB Output is correct
84 Correct 14 ms 24464 KB Output is correct
85 Correct 119 ms 33688 KB Output is correct
86 Correct 15 ms 24612 KB Output is correct
87 Correct 100 ms 32460 KB Output is correct
88 Correct 17 ms 24332 KB Output is correct
89 Correct 118 ms 31708 KB Output is correct
90 Correct 122 ms 33644 KB Output is correct
91 Correct 135 ms 35352 KB Output is correct
92 Correct 74 ms 31872 KB Output is correct
93 Correct 16 ms 24532 KB Output is correct
94 Correct 14 ms 24276 KB Output is correct
95 Correct 125 ms 34352 KB Output is correct
96 Correct 121 ms 38392 KB Output is correct
97 Correct 14 ms 24532 KB Output is correct
98 Correct 14 ms 24324 KB Output is correct
99 Correct 103 ms 33048 KB Output is correct
100 Correct 14 ms 24580 KB Output is correct
101 Correct 110 ms 32604 KB Output is correct
102 Correct 147 ms 38632 KB Output is correct
103 Correct 14 ms 24528 KB Output is correct
104 Correct 14 ms 24660 KB Output is correct
105 Correct 14 ms 24532 KB Output is correct
106 Correct 14 ms 24532 KB Output is correct
107 Correct 15 ms 24532 KB Output is correct
108 Correct 699 ms 68496 KB Output is correct
109 Correct 908 ms 86096 KB Output is correct
110 Correct 910 ms 98628 KB Output is correct
111 Correct 1141 ms 99360 KB Output is correct
112 Correct 1046 ms 94792 KB Output is correct
113 Correct 691 ms 76240 KB Output is correct
114 Correct 888 ms 102916 KB Output is correct
115 Correct 857 ms 102928 KB Output is correct
116 Correct 905 ms 71408 KB Output is correct
117 Correct 948 ms 80268 KB Output is correct
118 Correct 815 ms 65832 KB Output is correct
119 Correct 899 ms 80236 KB Output is correct
120 Correct 971 ms 97956 KB Output is correct
121 Correct 902 ms 80332 KB Output is correct
122 Correct 966 ms 92236 KB Output is correct
123 Correct 680 ms 75900 KB Output is correct
124 Correct 998 ms 75244 KB Output is correct