oj.uz

Submission #694079

# Submission time Handle Problem Language Result Execution time Memory
694079 2023-02-03T17:33:41 Z tamthegod Mergers (JOI19_mergers) C++17
70 / 100
 1627 ms 262144 KB 
// Make the best become better
// No room for laziness
#include<bits/stdc++.h>

#define int long long
#define pb push_back
#define fi first
#define se second
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int maxN = 1e6 + 5;
const int mod = 1e9 + 7;
const ll oo = 1e18;
int n, m;
vector<int> adj[maxN];
vector<int> vc[maxN];
int f[maxN][21];
int depth[maxN];
pair<int, int> e[maxN];
int sum[maxN];
int lab[maxN];
int deg[maxN];
void ReadInput()
{
    cin >> n >> m;
    for(int i=1; i<n; i++)
    {
        int u, v;
        cin >> u >> v;
        e[i] = {u, v};
        adj[u].pb(v);
        adj[v].pb(u);
    }
    for(int i=1; i<=n; i++)
    {
        int x;
        cin >> x;
        vc[x].pb(i);
    }
}
int Findset(int u)
{
    return lab[u] < 0 ? u : lab[u] = Findset(lab[u]);
}
void Unite(int u, int v)
{
    int r = Findset(u), s = Findset(v);
    if(r == s) return;
    if(lab[r] > lab[s]) swap(r, s);
    lab[r] += lab[s];
    lab[s] = r;
}
void dfs(int u, int par)
{
    for(int v : adj[u])
    {
        if(v == par) continue;
        f[v][0] = u;
        depth[v] = depth[u] + 1;
        for(int i=1; i<=20; i++)
            f[v][i] = f[f[v][i - 1]][i - 1];
        dfs(v, u);
    }
}
int lca(int u, int v)
{
    if(depth[u] < depth[v]) swap(u, v);
    int k = depth[u] - depth[v];
    for(int i=20; i>=0; i--)
        if((k >> i) & 1)
            u = f[u][i];
    if(u == v) return u;
    for(int i=20; i>=0; i--)
        if(f[u][i] != f[v][i])
        {
            u = f[u][i];
            v = f[v][i];
        }
    return f[u][0];
}
void dfs1(int u, int par)
{
    for(int v : adj[u])
    {
        if(v == par) continue;
        dfs1(v, u);
        sum[u] += sum[v];
    }
    if(sum[u]) Unite(u, par);
}
void Solve()
{
    dfs(1, 0);
    for(int i=1; i<=m; i++)
    {
        if(vc[i].empty()) continue;
        int tmp = vc[i][0];
        for(int v : vc[i])
        {
            sum[v] += -1;
            tmp = lca(tmp, v);
        }
        sum[tmp] += vc[i].size();
    }
    memset(lab, -1, sizeof lab);
    dfs1(1, 0);
    map<pair<int, int>, int> mp;
    for(int i=1; i<n; i++)
    {
        int u = Findset(e[i].fi), v = Findset(e[i].se);
        if(u == v || mp[{u, v}]) continue;
        deg[u]++;
        deg[v]++;
        mp[{u, v}] = mp[{v, u}] = 1;
    }
    int cnt = 0;
    for(int i=1; i<=n; i++)
    {
      //  cout << Findset(i) << " ";
        if(lab[i] > 0) continue;
        if(deg[i] == 1) cnt++;
    }
    cout << (cnt + 1) / 2;
}
int32_t main()
{
    //freopen("sol.inp", "r", stdin);
    //freopen("sol.out", "w", stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    ReadInput();
    Solve();
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 55124 KB Output is correct
2 Correct 25 ms 55124 KB Output is correct
3 Correct 26 ms 55176 KB Output is correct
4 Correct 25 ms 55124 KB Output is correct
5 Correct 26 ms 55052 KB Output is correct
6 Correct 26 ms 55180 KB Output is correct
7 Correct 27 ms 55124 KB Output is correct
8 Correct 29 ms 55132 KB Output is correct
9 Correct 26 ms 55156 KB Output is correct
10 Correct 26 ms 55080 KB Output is correct
11 Correct 26 ms 55180 KB Output is correct
12 Correct 26 ms 55112 KB Output is correct
13 Correct 28 ms 55144 KB Output is correct
14 Correct 26 ms 55168 KB Output is correct
15 Correct 28 ms 55140 KB Output is correct
16 Correct 26 ms 55056 KB Output is correct
17 Correct 31 ms 55072 KB Output is correct
18 Correct 28 ms 55180 KB Output is correct
19 Correct 26 ms 55124 KB Output is correct
20 Correct 25 ms 55124 KB Output is correct
21 Correct 25 ms 55184 KB Output is correct
22 Correct 26 ms 55128 KB Output is correct
23 Correct 26 ms 55144 KB Output is correct
24 Correct 27 ms 55124 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 55124 KB Output is correct
2 Correct 25 ms 55124 KB Output is correct
3 Correct 26 ms 55176 KB Output is correct
4 Correct 25 ms 55124 KB Output is correct
5 Correct 26 ms 55052 KB Output is correct
6 Correct 26 ms 55180 KB Output is correct
7 Correct 27 ms 55124 KB Output is correct
8 Correct 29 ms 55132 KB Output is correct
9 Correct 26 ms 55156 KB Output is correct
10 Correct 26 ms 55080 KB Output is correct
11 Correct 26 ms 55180 KB Output is correct
12 Correct 26 ms 55112 KB Output is correct
13 Correct 28 ms 55144 KB Output is correct
14 Correct 26 ms 55168 KB Output is correct
15 Correct 28 ms 55140 KB Output is correct
16 Correct 26 ms 55056 KB Output is correct
17 Correct 31 ms 55072 KB Output is correct
18 Correct 28 ms 55180 KB Output is correct
19 Correct 26 ms 55124 KB Output is correct
20 Correct 25 ms 55124 KB Output is correct
21 Correct 25 ms 55184 KB Output is correct
22 Correct 26 ms 55128 KB Output is correct
23 Correct 26 ms 55144 KB Output is correct
24 Correct 27 ms 55124 KB Output is correct
25 Correct 26 ms 55124 KB Output is correct
26 Correct 32 ms 56060 KB Output is correct
27 Correct 27 ms 55816 KB Output is correct
28 Correct 28 ms 56224 KB Output is correct
29 Correct 29 ms 56316 KB Output is correct
30 Correct 28 ms 55876 KB Output is correct
31 Correct 27 ms 55120 KB Output is correct
32 Correct 32 ms 56112 KB Output is correct
33 Correct 29 ms 55176 KB Output is correct
34 Correct 27 ms 55864 KB Output is correct
35 Correct 30 ms 56284 KB Output is correct
36 Correct 28 ms 55896 KB Output is correct
37 Correct 34 ms 55964 KB Output is correct
38 Correct 28 ms 55124 KB Output is correct
39 Correct 29 ms 55900 KB Output is correct
40 Correct 28 ms 55892 KB Output is correct
41 Correct 32 ms 55940 KB Output is correct
42 Correct 28 ms 56088 KB Output is correct
43 Correct 28 ms 56020 KB Output is correct
44 Correct 28 ms 55112 KB Output is correct
45 Correct 29 ms 56020 KB Output is correct
46 Correct 37 ms 55892 KB Output is correct
47 Correct 30 ms 55140 KB Output is correct
48 Correct 29 ms 55892 KB Output is correct
49 Correct 34 ms 56340 KB Output is correct
50 Correct 32 ms 56376 KB Output is correct
51 Correct 27 ms 55968 KB Output is correct
52 Correct 28 ms 55920 KB Output is correct
53 Correct 34 ms 55996 KB Output is correct
54 Correct 29 ms 55892 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 55124 KB Output is correct
2 Correct 25 ms 55124 KB Output is correct
3 Correct 26 ms 55176 KB Output is correct
4 Correct 25 ms 55124 KB Output is correct
5 Correct 26 ms 55052 KB Output is correct
6 Correct 26 ms 55180 KB Output is correct
7 Correct 27 ms 55124 KB Output is correct
8 Correct 29 ms 55132 KB Output is correct
9 Correct 26 ms 55156 KB Output is correct
10 Correct 26 ms 55080 KB Output is correct
11 Correct 26 ms 55180 KB Output is correct
12 Correct 26 ms 55112 KB Output is correct
13 Correct 28 ms 55144 KB Output is correct
14 Correct 26 ms 55168 KB Output is correct
15 Correct 28 ms 55140 KB Output is correct
16 Correct 26 ms 55056 KB Output is correct
17 Correct 31 ms 55072 KB Output is correct
18 Correct 28 ms 55180 KB Output is correct
19 Correct 26 ms 55124 KB Output is correct
20 Correct 25 ms 55124 KB Output is correct
21 Correct 25 ms 55184 KB Output is correct
22 Correct 26 ms 55128 KB Output is correct
23 Correct 26 ms 55144 KB Output is correct
24 Correct 27 ms 55124 KB Output is correct
25 Correct 27 ms 55120 KB Output is correct
26 Correct 111 ms 79700 KB Output is correct
27 Correct 135 ms 79500 KB Output is correct
28 Correct 28 ms 55916 KB Output is correct
29 Correct 27 ms 55048 KB Output is correct
30 Correct 26 ms 55164 KB Output is correct
31 Correct 156 ms 79524 KB Output is correct
32 Correct 28 ms 55808 KB Output is correct
33 Correct 155 ms 84664 KB Output is correct
34 Correct 126 ms 79440 KB Output is correct
35 Correct 27 ms 55892 KB Output is correct
36 Correct 155 ms 79604 KB Output is correct
37 Correct 34 ms 55880 KB Output is correct
38 Correct 28 ms 55880 KB Output is correct
39 Correct 93 ms 79692 KB Output is correct
40 Correct 28 ms 55956 KB Output is correct
41 Correct 115 ms 79264 KB Output is correct
42 Correct 150 ms 80724 KB Output is correct
43 Correct 27 ms 55096 KB Output is correct
44 Correct 162 ms 84780 KB Output is correct
45 Correct 152 ms 83152 KB Output is correct
46 Correct 28 ms 55884 KB Output is correct
47 Correct 28 ms 55788 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 95 ms 79872 KB Output is correct
2 Correct 213 ms 95216 KB Output is correct
3 Correct 29 ms 56148 KB Output is correct
4 Correct 28 ms 55892 KB Output is correct
5 Correct 26 ms 55068 KB Output is correct
6 Correct 28 ms 55172 KB Output is correct
7 Correct 28 ms 55892 KB Output is correct
8 Correct 170 ms 82288 KB Output is correct
9 Correct 28 ms 55884 KB Output is correct
10 Correct 134 ms 80372 KB Output is correct
11 Correct 27 ms 55136 KB Output is correct
12 Correct 138 ms 79784 KB Output is correct
13 Correct 168 ms 83496 KB Output is correct
14 Correct 234 ms 94788 KB Output is correct
15 Correct 97 ms 79580 KB Output is correct
16 Correct 28 ms 55988 KB Output is correct
17 Correct 26 ms 55084 KB Output is correct
18 Correct 204 ms 92216 KB Output is correct
19 Correct 257 ms 97504 KB Output is correct
20 Correct 28 ms 55872 KB Output is correct
21 Correct 29 ms 55148 KB Output is correct
22 Correct 133 ms 83524 KB Output is correct
23 Correct 27 ms 55884 KB Output is correct
24 Correct 158 ms 81648 KB Output is correct
25 Correct 263 ms 97152 KB Output is correct
26 Correct 29 ms 56268 KB Output is correct
27 Correct 29 ms 56268 KB Output is correct
28 Correct 29 ms 55940 KB Output is correct
29 Correct 29 ms 55892 KB Output is correct
30 Correct 27 ms 55892 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 55124 KB Output is correct
2 Correct 25 ms 55124 KB Output is correct
3 Correct 26 ms 55176 KB Output is correct
4 Correct 25 ms 55124 KB Output is correct
5 Correct 26 ms 55052 KB Output is correct
6 Correct 26 ms 55180 KB Output is correct
7 Correct 27 ms 55124 KB Output is correct
8 Correct 29 ms 55132 KB Output is correct
9 Correct 26 ms 55156 KB Output is correct
10 Correct 26 ms 55080 KB Output is correct
11 Correct 26 ms 55180 KB Output is correct
12 Correct 26 ms 55112 KB Output is correct
13 Correct 28 ms 55144 KB Output is correct
14 Correct 26 ms 55168 KB Output is correct
15 Correct 28 ms 55140 KB Output is correct
16 Correct 26 ms 55056 KB Output is correct
17 Correct 31 ms 55072 KB Output is correct
18 Correct 28 ms 55180 KB Output is correct
19 Correct 26 ms 55124 KB Output is correct
20 Correct 25 ms 55124 KB Output is correct
21 Correct 25 ms 55184 KB Output is correct
22 Correct 26 ms 55128 KB Output is correct
23 Correct 26 ms 55144 KB Output is correct
24 Correct 27 ms 55124 KB Output is correct
25 Correct 26 ms 55124 KB Output is correct
26 Correct 32 ms 56060 KB Output is correct
27 Correct 27 ms 55816 KB Output is correct
28 Correct 28 ms 56224 KB Output is correct
29 Correct 29 ms 56316 KB Output is correct
30 Correct 28 ms 55876 KB Output is correct
31 Correct 27 ms 55120 KB Output is correct
32 Correct 32 ms 56112 KB Output is correct
33 Correct 29 ms 55176 KB Output is correct
34 Correct 27 ms 55864 KB Output is correct
35 Correct 30 ms 56284 KB Output is correct
36 Correct 28 ms 55896 KB Output is correct
37 Correct 34 ms 55964 KB Output is correct
38 Correct 28 ms 55124 KB Output is correct
39 Correct 29 ms 55900 KB Output is correct
40 Correct 28 ms 55892 KB Output is correct
41 Correct 32 ms 55940 KB Output is correct
42 Correct 28 ms 56088 KB Output is correct
43 Correct 28 ms 56020 KB Output is correct
44 Correct 28 ms 55112 KB Output is correct
45 Correct 29 ms 56020 KB Output is correct
46 Correct 37 ms 55892 KB Output is correct
47 Correct 30 ms 55140 KB Output is correct
48 Correct 29 ms 55892 KB Output is correct
49 Correct 34 ms 56340 KB Output is correct
50 Correct 32 ms 56376 KB Output is correct
51 Correct 27 ms 55968 KB Output is correct
52 Correct 28 ms 55920 KB Output is correct
53 Correct 34 ms 55996 KB Output is correct
54 Correct 29 ms 55892 KB Output is correct
55 Correct 27 ms 55120 KB Output is correct
56 Correct 111 ms 79700 KB Output is correct
57 Correct 135 ms 79500 KB Output is correct
58 Correct 28 ms 55916 KB Output is correct
59 Correct 27 ms 55048 KB Output is correct
60 Correct 26 ms 55164 KB Output is correct
61 Correct 156 ms 79524 KB Output is correct
62 Correct 28 ms 55808 KB Output is correct
63 Correct 155 ms 84664 KB Output is correct
64 Correct 126 ms 79440 KB Output is correct
65 Correct 27 ms 55892 KB Output is correct
66 Correct 155 ms 79604 KB Output is correct
67 Correct 34 ms 55880 KB Output is correct
68 Correct 28 ms 55880 KB Output is correct
69 Correct 93 ms 79692 KB Output is correct
70 Correct 28 ms 55956 KB Output is correct
71 Correct 115 ms 79264 KB Output is correct
72 Correct 150 ms 80724 KB Output is correct
73 Correct 27 ms 55096 KB Output is correct
74 Correct 162 ms 84780 KB Output is correct
75 Correct 152 ms 83152 KB Output is correct
76 Correct 28 ms 55884 KB Output is correct
77 Correct 28 ms 55788 KB Output is correct
78 Correct 95 ms 79872 KB Output is correct
79 Correct 213 ms 95216 KB Output is correct
80 Correct 29 ms 56148 KB Output is correct
81 Correct 28 ms 55892 KB Output is correct
82 Correct 26 ms 55068 KB Output is correct
83 Correct 28 ms 55172 KB Output is correct
84 Correct 28 ms 55892 KB Output is correct
85 Correct 170 ms 82288 KB Output is correct
86 Correct 28 ms 55884 KB Output is correct
87 Correct 134 ms 80372 KB Output is correct
88 Correct 27 ms 55136 KB Output is correct
89 Correct 138 ms 79784 KB Output is correct
90 Correct 168 ms 83496 KB Output is correct
91 Correct 234 ms 94788 KB Output is correct
92 Correct 97 ms 79580 KB Output is correct
93 Correct 28 ms 55988 KB Output is correct
94 Correct 26 ms 55084 KB Output is correct
95 Correct 204 ms 92216 KB Output is correct
96 Correct 257 ms 97504 KB Output is correct
97 Correct 28 ms 55872 KB Output is correct
98 Correct 29 ms 55148 KB Output is correct
99 Correct 133 ms 83524 KB Output is correct
100 Correct 27 ms 55884 KB Output is correct
101 Correct 158 ms 81648 KB Output is correct
102 Correct 263 ms 97152 KB Output is correct
103 Correct 29 ms 56268 KB Output is correct
104 Correct 29 ms 56268 KB Output is correct
105 Correct 29 ms 55940 KB Output is correct
106 Correct 29 ms 55892 KB Output is correct
107 Correct 27 ms 55892 KB Output is correct
108 Correct 677 ms 190836 KB Output is correct
109 Correct 980 ms 187716 KB Output is correct
110 Correct 978 ms 196612 KB Output is correct
111 Runtime error 1627 ms 262144 KB Execution killed with signal 9
112 Halted 0 ms 0 KB -