oj.uz

Submission #694077

# Submission time Handle Problem Language Result Execution time Memory
694077 2023-02-03T17:30:08 Z tamthegod Mergers (JOI19_mergers) C++17
70 / 100
 1936 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][20];
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<=18; 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=18; i>=0; i--)
        if((k >> i) & 1)
            u = f[u][i];
    if(u == v) return u;
    for(int i=18; 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();
       // cout << tmp << " ";
    }
    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 27 ms 55124 KB Output is correct
2 Correct 29 ms 55124 KB Output is correct
3 Correct 30 ms 55124 KB Output is correct
4 Correct 26 ms 55124 KB Output is correct
5 Correct 31 ms 55072 KB Output is correct
6 Correct 27 ms 55108 KB Output is correct
7 Correct 25 ms 55104 KB Output is correct
8 Correct 26 ms 55116 KB Output is correct
9 Correct 28 ms 55088 KB Output is correct
10 Correct 27 ms 55140 KB Output is correct
11 Correct 26 ms 55136 KB Output is correct
12 Correct 27 ms 55108 KB Output is correct
13 Correct 26 ms 55088 KB Output is correct
14 Correct 28 ms 55112 KB Output is correct
15 Correct 25 ms 55148 KB Output is correct
16 Correct 27 ms 55124 KB Output is correct
17 Correct 30 ms 55112 KB Output is correct
18 Correct 25 ms 55092 KB Output is correct
19 Correct 26 ms 55124 KB Output is correct
20 Correct 28 ms 55116 KB Output is correct
21 Correct 27 ms 55124 KB Output is correct
22 Correct 26 ms 55140 KB Output is correct
23 Correct 26 ms 55064 KB Output is correct
24 Correct 26 ms 55160 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 55124 KB Output is correct
2 Correct 29 ms 55124 KB Output is correct
3 Correct 30 ms 55124 KB Output is correct
4 Correct 26 ms 55124 KB Output is correct
5 Correct 31 ms 55072 KB Output is correct
6 Correct 27 ms 55108 KB Output is correct
7 Correct 25 ms 55104 KB Output is correct
8 Correct 26 ms 55116 KB Output is correct
9 Correct 28 ms 55088 KB Output is correct
10 Correct 27 ms 55140 KB Output is correct
11 Correct 26 ms 55136 KB Output is correct
12 Correct 27 ms 55108 KB Output is correct
13 Correct 26 ms 55088 KB Output is correct
14 Correct 28 ms 55112 KB Output is correct
15 Correct 25 ms 55148 KB Output is correct
16 Correct 27 ms 55124 KB Output is correct
17 Correct 30 ms 55112 KB Output is correct
18 Correct 25 ms 55092 KB Output is correct
19 Correct 26 ms 55124 KB Output is correct
20 Correct 28 ms 55116 KB Output is correct
21 Correct 27 ms 55124 KB Output is correct
22 Correct 26 ms 55140 KB Output is correct
23 Correct 26 ms 55064 KB Output is correct
24 Correct 26 ms 55160 KB Output is correct
25 Correct 33 ms 55040 KB Output is correct
26 Correct 32 ms 56156 KB Output is correct
27 Correct 28 ms 55880 KB Output is correct
28 Correct 29 ms 56280 KB Output is correct
29 Correct 28 ms 56276 KB Output is correct
30 Correct 28 ms 55892 KB Output is correct
31 Correct 27 ms 55124 KB Output is correct
32 Correct 28 ms 56092 KB Output is correct
33 Correct 27 ms 55124 KB Output is correct
34 Correct 27 ms 55892 KB Output is correct
35 Correct 29 ms 56276 KB Output is correct
36 Correct 29 ms 55864 KB Output is correct
37 Correct 28 ms 55892 KB Output is correct
38 Correct 30 ms 55088 KB Output is correct
39 Correct 28 ms 55888 KB Output is correct
40 Correct 29 ms 55820 KB Output is correct
41 Correct 28 ms 55892 KB Output is correct
42 Correct 28 ms 56020 KB Output is correct
43 Correct 29 ms 56012 KB Output is correct
44 Correct 28 ms 55096 KB Output is correct
45 Correct 28 ms 56008 KB Output is correct
46 Correct 29 ms 55956 KB Output is correct
47 Correct 28 ms 55096 KB Output is correct
48 Correct 28 ms 55888 KB Output is correct
49 Correct 34 ms 56348 KB Output is correct
50 Correct 36 ms 56396 KB Output is correct
51 Correct 33 ms 55860 KB Output is correct
52 Correct 27 ms 55868 KB Output is correct
53 Correct 28 ms 56012 KB Output is correct
54 Correct 27 ms 55892 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 55124 KB Output is correct
2 Correct 29 ms 55124 KB Output is correct
3 Correct 30 ms 55124 KB Output is correct
4 Correct 26 ms 55124 KB Output is correct
5 Correct 31 ms 55072 KB Output is correct
6 Correct 27 ms 55108 KB Output is correct
7 Correct 25 ms 55104 KB Output is correct
8 Correct 26 ms 55116 KB Output is correct
9 Correct 28 ms 55088 KB Output is correct
10 Correct 27 ms 55140 KB Output is correct
11 Correct 26 ms 55136 KB Output is correct
12 Correct 27 ms 55108 KB Output is correct
13 Correct 26 ms 55088 KB Output is correct
14 Correct 28 ms 55112 KB Output is correct
15 Correct 25 ms 55148 KB Output is correct
16 Correct 27 ms 55124 KB Output is correct
17 Correct 30 ms 55112 KB Output is correct
18 Correct 25 ms 55092 KB Output is correct
19 Correct 26 ms 55124 KB Output is correct
20 Correct 28 ms 55116 KB Output is correct
21 Correct 27 ms 55124 KB Output is correct
22 Correct 26 ms 55140 KB Output is correct
23 Correct 26 ms 55064 KB Output is correct
24 Correct 26 ms 55160 KB Output is correct
25 Correct 32 ms 55116 KB Output is correct
26 Correct 100 ms 80352 KB Output is correct
27 Correct 118 ms 80192 KB Output is correct
28 Correct 32 ms 55884 KB Output is correct
29 Correct 26 ms 55052 KB Output is correct
30 Correct 29 ms 55104 KB Output is correct
31 Correct 134 ms 80244 KB Output is correct
32 Correct 28 ms 55904 KB Output is correct
33 Correct 155 ms 85308 KB Output is correct
34 Correct 121 ms 80124 KB Output is correct
35 Correct 28 ms 55908 KB Output is correct
36 Correct 141 ms 80244 KB Output is correct
37 Correct 32 ms 55860 KB Output is correct
38 Correct 27 ms 55864 KB Output is correct
39 Correct 94 ms 80292 KB Output is correct
40 Correct 28 ms 56012 KB Output is correct
41 Correct 112 ms 79852 KB Output is correct
42 Correct 142 ms 81452 KB Output is correct
43 Correct 26 ms 55096 KB Output is correct
44 Correct 152 ms 85292 KB Output is correct
45 Correct 150 ms 83832 KB Output is correct
46 Correct 28 ms 55884 KB Output is correct
47 Correct 28 ms 55892 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 90 ms 79020 KB Output is correct
2 Correct 187 ms 94316 KB Output is correct
3 Correct 34 ms 56092 KB Output is correct
4 Correct 27 ms 55876 KB Output is correct
5 Correct 26 ms 55164 KB Output is correct
6 Correct 25 ms 55072 KB Output is correct
7 Correct 27 ms 55912 KB Output is correct
8 Correct 148 ms 83248 KB Output is correct
9 Correct 28 ms 55828 KB Output is correct
10 Correct 126 ms 81048 KB Output is correct
11 Correct 27 ms 55104 KB Output is correct
12 Correct 135 ms 80652 KB Output is correct
13 Correct 151 ms 84372 KB Output is correct
14 Correct 231 ms 95836 KB Output is correct
15 Correct 105 ms 80368 KB Output is correct
16 Correct 28 ms 56028 KB Output is correct
17 Correct 28 ms 55160 KB Output is correct
18 Correct 169 ms 93276 KB Output is correct
19 Correct 245 ms 98380 KB Output is correct
20 Correct 29 ms 55984 KB Output is correct
21 Correct 28 ms 55124 KB Output is correct
22 Correct 120 ms 84328 KB Output is correct
23 Correct 27 ms 55884 KB Output is correct
24 Correct 164 ms 82500 KB Output is correct
25 Correct 251 ms 98128 KB Output is correct
26 Correct 29 ms 56292 KB Output is correct
27 Correct 31 ms 56312 KB Output is correct
28 Correct 28 ms 55892 KB Output is correct
29 Correct 28 ms 56004 KB Output is correct
30 Correct 28 ms 55964 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 55124 KB Output is correct
2 Correct 29 ms 55124 KB Output is correct
3 Correct 30 ms 55124 KB Output is correct
4 Correct 26 ms 55124 KB Output is correct
5 Correct 31 ms 55072 KB Output is correct
6 Correct 27 ms 55108 KB Output is correct
7 Correct 25 ms 55104 KB Output is correct
8 Correct 26 ms 55116 KB Output is correct
9 Correct 28 ms 55088 KB Output is correct
10 Correct 27 ms 55140 KB Output is correct
11 Correct 26 ms 55136 KB Output is correct
12 Correct 27 ms 55108 KB Output is correct
13 Correct 26 ms 55088 KB Output is correct
14 Correct 28 ms 55112 KB Output is correct
15 Correct 25 ms 55148 KB Output is correct
16 Correct 27 ms 55124 KB Output is correct
17 Correct 30 ms 55112 KB Output is correct
18 Correct 25 ms 55092 KB Output is correct
19 Correct 26 ms 55124 KB Output is correct
20 Correct 28 ms 55116 KB Output is correct
21 Correct 27 ms 55124 KB Output is correct
22 Correct 26 ms 55140 KB Output is correct
23 Correct 26 ms 55064 KB Output is correct
24 Correct 26 ms 55160 KB Output is correct
25 Correct 33 ms 55040 KB Output is correct
26 Correct 32 ms 56156 KB Output is correct
27 Correct 28 ms 55880 KB Output is correct
28 Correct 29 ms 56280 KB Output is correct
29 Correct 28 ms 56276 KB Output is correct
30 Correct 28 ms 55892 KB Output is correct
31 Correct 27 ms 55124 KB Output is correct
32 Correct 28 ms 56092 KB Output is correct
33 Correct 27 ms 55124 KB Output is correct
34 Correct 27 ms 55892 KB Output is correct
35 Correct 29 ms 56276 KB Output is correct
36 Correct 29 ms 55864 KB Output is correct
37 Correct 28 ms 55892 KB Output is correct
38 Correct 30 ms 55088 KB Output is correct
39 Correct 28 ms 55888 KB Output is correct
40 Correct 29 ms 55820 KB Output is correct
41 Correct 28 ms 55892 KB Output is correct
42 Correct 28 ms 56020 KB Output is correct
43 Correct 29 ms 56012 KB Output is correct
44 Correct 28 ms 55096 KB Output is correct
45 Correct 28 ms 56008 KB Output is correct
46 Correct 29 ms 55956 KB Output is correct
47 Correct 28 ms 55096 KB Output is correct
48 Correct 28 ms 55888 KB Output is correct
49 Correct 34 ms 56348 KB Output is correct
50 Correct 36 ms 56396 KB Output is correct
51 Correct 33 ms 55860 KB Output is correct
52 Correct 27 ms 55868 KB Output is correct
53 Correct 28 ms 56012 KB Output is correct
54 Correct 27 ms 55892 KB Output is correct
55 Correct 32 ms 55116 KB Output is correct
56 Correct 100 ms 80352 KB Output is correct
57 Correct 118 ms 80192 KB Output is correct
58 Correct 32 ms 55884 KB Output is correct
59 Correct 26 ms 55052 KB Output is correct
60 Correct 29 ms 55104 KB Output is correct
61 Correct 134 ms 80244 KB Output is correct
62 Correct 28 ms 55904 KB Output is correct
63 Correct 155 ms 85308 KB Output is correct
64 Correct 121 ms 80124 KB Output is correct
65 Correct 28 ms 55908 KB Output is correct
66 Correct 141 ms 80244 KB Output is correct
67 Correct 32 ms 55860 KB Output is correct
68 Correct 27 ms 55864 KB Output is correct
69 Correct 94 ms 80292 KB Output is correct
70 Correct 28 ms 56012 KB Output is correct
71 Correct 112 ms 79852 KB Output is correct
72 Correct 142 ms 81452 KB Output is correct
73 Correct 26 ms 55096 KB Output is correct
74 Correct 152 ms 85292 KB Output is correct
75 Correct 150 ms 83832 KB Output is correct
76 Correct 28 ms 55884 KB Output is correct
77 Correct 28 ms 55892 KB Output is correct
78 Correct 90 ms 79020 KB Output is correct
79 Correct 187 ms 94316 KB Output is correct
80 Correct 34 ms 56092 KB Output is correct
81 Correct 27 ms 55876 KB Output is correct
82 Correct 26 ms 55164 KB Output is correct
83 Correct 25 ms 55072 KB Output is correct
84 Correct 27 ms 55912 KB Output is correct
85 Correct 148 ms 83248 KB Output is correct
86 Correct 28 ms 55828 KB Output is correct
87 Correct 126 ms 81048 KB Output is correct
88 Correct 27 ms 55104 KB Output is correct
89 Correct 135 ms 80652 KB Output is correct
90 Correct 151 ms 84372 KB Output is correct
91 Correct 231 ms 95836 KB Output is correct
92 Correct 105 ms 80368 KB Output is correct
93 Correct 28 ms 56028 KB Output is correct
94 Correct 28 ms 55160 KB Output is correct
95 Correct 169 ms 93276 KB Output is correct
96 Correct 245 ms 98380 KB Output is correct
97 Correct 29 ms 55984 KB Output is correct
98 Correct 28 ms 55124 KB Output is correct
99 Correct 120 ms 84328 KB Output is correct
100 Correct 27 ms 55884 KB Output is correct
101 Correct 164 ms 82500 KB Output is correct
102 Correct 251 ms 98128 KB Output is correct
103 Correct 29 ms 56292 KB Output is correct
104 Correct 31 ms 56312 KB Output is correct
105 Correct 28 ms 55892 KB Output is correct
106 Correct 28 ms 56004 KB Output is correct
107 Correct 28 ms 55964 KB Output is correct
108 Correct 679 ms 196700 KB Output is correct
109 Correct 937 ms 191164 KB Output is correct
110 Correct 937 ms 200108 KB Output is correct
111 Correct 1936 ms 262144 KB Output is correct
112 Correct 1399 ms 242908 KB Output is correct
113 Correct 1249 ms 247184 KB Output is correct
114 Correct 683 ms 179472 KB Output is correct
115 Correct 673 ms 179508 KB Output is correct
116 Correct 859 ms 187284 KB Output is correct
117 Correct 1836 ms 260012 KB Output is correct
118 Correct 730 ms 182120 KB Output is correct
119 Correct 1822 ms 259960 KB Output is correct
120 Runtime error 1815 ms 262144 KB Execution killed with signal 9
121 Halted 0 ms 0 KB -