답안 #694078

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
694078	2023-02-03T17:31:28 Z	tamthegod	Mergers (JOI19_mergers)	C++17	70 / 100	1865 ms	262144 KB

mergers

// 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=19; i>=0; i--)
        if((k >> i) & 1)
            u = f[u][i];
    if(u == v) return u;
    for(int i=19; 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

#	결과	실행 시간	메모리	Grader output
1	Correct	29 ms	55024 KB	Output is correct
2	Correct	28 ms	55100 KB	Output is correct
3	Correct	27 ms	55140 KB	Output is correct
4	Correct	26 ms	55132 KB	Output is correct
5	Correct	26 ms	55048 KB	Output is correct
6	Correct	26 ms	55096 KB	Output is correct
7	Correct	26 ms	55144 KB	Output is correct
8	Correct	26 ms	55188 KB	Output is correct
9	Correct	25 ms	55100 KB	Output is correct
10	Correct	29 ms	55104 KB	Output is correct
11	Correct	33 ms	55100 KB	Output is correct
12	Correct	26 ms	55136 KB	Output is correct
13	Correct	26 ms	55164 KB	Output is correct
14	Correct	24 ms	55108 KB	Output is correct
15	Correct	25 ms	55156 KB	Output is correct
16	Correct	25 ms	55116 KB	Output is correct
17	Correct	26 ms	55100 KB	Output is correct
18	Correct	26 ms	55176 KB	Output is correct
19	Correct	26 ms	55140 KB	Output is correct
20	Correct	26 ms	55072 KB	Output is correct
21	Correct	26 ms	55124 KB	Output is correct
22	Correct	26 ms	55124 KB	Output is correct
23	Correct	26 ms	55096 KB	Output is correct
24	Correct	28 ms	55088 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	29 ms	55024 KB	Output is correct
2	Correct	28 ms	55100 KB	Output is correct
3	Correct	27 ms	55140 KB	Output is correct
4	Correct	26 ms	55132 KB	Output is correct
5	Correct	26 ms	55048 KB	Output is correct
6	Correct	26 ms	55096 KB	Output is correct
7	Correct	26 ms	55144 KB	Output is correct
8	Correct	26 ms	55188 KB	Output is correct
9	Correct	25 ms	55100 KB	Output is correct
10	Correct	29 ms	55104 KB	Output is correct
11	Correct	33 ms	55100 KB	Output is correct
12	Correct	26 ms	55136 KB	Output is correct
13	Correct	26 ms	55164 KB	Output is correct
14	Correct	24 ms	55108 KB	Output is correct
15	Correct	25 ms	55156 KB	Output is correct
16	Correct	25 ms	55116 KB	Output is correct
17	Correct	26 ms	55100 KB	Output is correct
18	Correct	26 ms	55176 KB	Output is correct
19	Correct	26 ms	55140 KB	Output is correct
20	Correct	26 ms	55072 KB	Output is correct
21	Correct	26 ms	55124 KB	Output is correct
22	Correct	26 ms	55124 KB	Output is correct
23	Correct	26 ms	55096 KB	Output is correct
24	Correct	28 ms	55088 KB	Output is correct
25	Correct	25 ms	55064 KB	Output is correct
26	Correct	30 ms	56376 KB	Output is correct
27	Correct	31 ms	55940 KB	Output is correct
28	Correct	29 ms	56324 KB	Output is correct
29	Correct	34 ms	56356 KB	Output is correct
30	Correct	27 ms	55848 KB	Output is correct
31	Correct	25 ms	55124 KB	Output is correct
32	Correct	29 ms	56156 KB	Output is correct
33	Correct	28 ms	55100 KB	Output is correct
34	Correct	32 ms	55864 KB	Output is correct
35	Correct	31 ms	56252 KB	Output is correct
36	Correct	28 ms	55892 KB	Output is correct
37	Correct	28 ms	55932 KB	Output is correct
38	Correct	28 ms	55072 KB	Output is correct
39	Correct	33 ms	55972 KB	Output is correct
40	Correct	28 ms	55928 KB	Output is correct
41	Correct	30 ms	55928 KB	Output is correct
42	Correct	28 ms	56020 KB	Output is correct
43	Correct	27 ms	56020 KB	Output is correct
44	Correct	26 ms	55124 KB	Output is correct
45	Correct	30 ms	55936 KB	Output is correct
46	Correct	27 ms	55964 KB	Output is correct
47	Correct	25 ms	55116 KB	Output is correct
48	Correct	34 ms	56012 KB	Output is correct
49	Correct	29 ms	56276 KB	Output is correct
50	Correct	30 ms	56328 KB	Output is correct
51	Correct	34 ms	55868 KB	Output is correct
52	Correct	33 ms	55888 KB	Output is correct
53	Correct	28 ms	55932 KB	Output is correct
54	Correct	29 ms	55896 KB	Output is correct

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	29 ms	55024 KB	Output is correct
2	Correct	28 ms	55100 KB	Output is correct
3	Correct	27 ms	55140 KB	Output is correct
4	Correct	26 ms	55132 KB	Output is correct
5	Correct	26 ms	55048 KB	Output is correct
6	Correct	26 ms	55096 KB	Output is correct
7	Correct	26 ms	55144 KB	Output is correct
8	Correct	26 ms	55188 KB	Output is correct
9	Correct	25 ms	55100 KB	Output is correct
10	Correct	29 ms	55104 KB	Output is correct
11	Correct	33 ms	55100 KB	Output is correct
12	Correct	26 ms	55136 KB	Output is correct
13	Correct	26 ms	55164 KB	Output is correct
14	Correct	24 ms	55108 KB	Output is correct
15	Correct	25 ms	55156 KB	Output is correct
16	Correct	25 ms	55116 KB	Output is correct
17	Correct	26 ms	55100 KB	Output is correct
18	Correct	26 ms	55176 KB	Output is correct
19	Correct	26 ms	55140 KB	Output is correct
20	Correct	26 ms	55072 KB	Output is correct
21	Correct	26 ms	55124 KB	Output is correct
22	Correct	26 ms	55124 KB	Output is correct
23	Correct	26 ms	55096 KB	Output is correct
24	Correct	28 ms	55088 KB	Output is correct
25	Correct	25 ms	55168 KB	Output is correct
26	Correct	95 ms	80296 KB	Output is correct
27	Correct	124 ms	80156 KB	Output is correct
28	Correct	28 ms	55908 KB	Output is correct
29	Correct	27 ms	55152 KB	Output is correct
30	Correct	26 ms	55124 KB	Output is correct
31	Correct	131 ms	80196 KB	Output is correct
32	Correct	27 ms	55872 KB	Output is correct
33	Correct	173 ms	85248 KB	Output is correct
34	Correct	130 ms	80148 KB	Output is correct
35	Correct	27 ms	55916 KB	Output is correct
36	Correct	145 ms	80336 KB	Output is correct
37	Correct	30 ms	55936 KB	Output is correct
38	Correct	30 ms	55892 KB	Output is correct
39	Correct	100 ms	80260 KB	Output is correct
40	Correct	29 ms	56012 KB	Output is correct
41	Correct	114 ms	79836 KB	Output is correct
42	Correct	181 ms	81552 KB	Output is correct
43	Correct	30 ms	55116 KB	Output is correct
44	Correct	143 ms	85340 KB	Output is correct
45	Correct	142 ms	83780 KB	Output is correct
46	Correct	28 ms	55892 KB	Output is correct
47	Correct	29 ms	55892 KB	Output is correct

Subtask #4
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	96 ms	78996 KB	Output is correct
2	Correct	196 ms	94292 KB	Output is correct
3	Correct	30 ms	56144 KB	Output is correct
4	Correct	33 ms	55864 KB	Output is correct
5	Correct	26 ms	55124 KB	Output is correct
6	Correct	29 ms	55072 KB	Output is correct
7	Correct	30 ms	55788 KB	Output is correct
8	Correct	147 ms	83300 KB	Output is correct
9	Correct	28 ms	55852 KB	Output is correct
10	Correct	123 ms	81036 KB	Output is correct
11	Correct	27 ms	55156 KB	Output is correct
12	Correct	136 ms	80588 KB	Output is correct
13	Correct	164 ms	84548 KB	Output is correct
14	Correct	251 ms	95820 KB	Output is correct
15	Correct	94 ms	80272 KB	Output is correct
16	Correct	29 ms	55968 KB	Output is correct
17	Correct	26 ms	55096 KB	Output is correct
18	Correct	185 ms	93296 KB	Output is correct
19	Correct	251 ms	98356 KB	Output is correct
20	Correct	29 ms	55884 KB	Output is correct
21	Correct	26 ms	55124 KB	Output is correct
22	Correct	124 ms	84368 KB	Output is correct
23	Correct	28 ms	55976 KB	Output is correct
24	Correct	142 ms	82488 KB	Output is correct
25	Correct	266 ms	98124 KB	Output is correct
26	Correct	29 ms	56276 KB	Output is correct
27	Correct	30 ms	56396 KB	Output is correct
28	Correct	32 ms	55892 KB	Output is correct
29	Correct	28 ms	55888 KB	Output is correct
30	Correct	27 ms	55992 KB	Output is correct

Subtask #5
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	29 ms	55024 KB	Output is correct
2	Correct	28 ms	55100 KB	Output is correct
3	Correct	27 ms	55140 KB	Output is correct
4	Correct	26 ms	55132 KB	Output is correct
5	Correct	26 ms	55048 KB	Output is correct
6	Correct	26 ms	55096 KB	Output is correct
7	Correct	26 ms	55144 KB	Output is correct
8	Correct	26 ms	55188 KB	Output is correct
9	Correct	25 ms	55100 KB	Output is correct
10	Correct	29 ms	55104 KB	Output is correct
11	Correct	33 ms	55100 KB	Output is correct
12	Correct	26 ms	55136 KB	Output is correct
13	Correct	26 ms	55164 KB	Output is correct
14	Correct	24 ms	55108 KB	Output is correct
15	Correct	25 ms	55156 KB	Output is correct
16	Correct	25 ms	55116 KB	Output is correct
17	Correct	26 ms	55100 KB	Output is correct
18	Correct	26 ms	55176 KB	Output is correct
19	Correct	26 ms	55140 KB	Output is correct
20	Correct	26 ms	55072 KB	Output is correct
21	Correct	26 ms	55124 KB	Output is correct
22	Correct	26 ms	55124 KB	Output is correct
23	Correct	26 ms	55096 KB	Output is correct
24	Correct	28 ms	55088 KB	Output is correct
25	Correct	25 ms	55064 KB	Output is correct
26	Correct	30 ms	56376 KB	Output is correct
27	Correct	31 ms	55940 KB	Output is correct
28	Correct	29 ms	56324 KB	Output is correct
29	Correct	34 ms	56356 KB	Output is correct
30	Correct	27 ms	55848 KB	Output is correct
31	Correct	25 ms	55124 KB	Output is correct
32	Correct	29 ms	56156 KB	Output is correct
33	Correct	28 ms	55100 KB	Output is correct
34	Correct	32 ms	55864 KB	Output is correct
35	Correct	31 ms	56252 KB	Output is correct
36	Correct	28 ms	55892 KB	Output is correct
37	Correct	28 ms	55932 KB	Output is correct
38	Correct	28 ms	55072 KB	Output is correct
39	Correct	33 ms	55972 KB	Output is correct
40	Correct	28 ms	55928 KB	Output is correct
41	Correct	30 ms	55928 KB	Output is correct
42	Correct	28 ms	56020 KB	Output is correct
43	Correct	27 ms	56020 KB	Output is correct
44	Correct	26 ms	55124 KB	Output is correct
45	Correct	30 ms	55936 KB	Output is correct
46	Correct	27 ms	55964 KB	Output is correct
47	Correct	25 ms	55116 KB	Output is correct
48	Correct	34 ms	56012 KB	Output is correct
49	Correct	29 ms	56276 KB	Output is correct
50	Correct	30 ms	56328 KB	Output is correct
51	Correct	34 ms	55868 KB	Output is correct
52	Correct	33 ms	55888 KB	Output is correct
53	Correct	28 ms	55932 KB	Output is correct
54	Correct	29 ms	55896 KB	Output is correct
55	Correct	25 ms	55168 KB	Output is correct
56	Correct	95 ms	80296 KB	Output is correct
57	Correct	124 ms	80156 KB	Output is correct
58	Correct	28 ms	55908 KB	Output is correct
59	Correct	27 ms	55152 KB	Output is correct
60	Correct	26 ms	55124 KB	Output is correct
61	Correct	131 ms	80196 KB	Output is correct
62	Correct	27 ms	55872 KB	Output is correct
63	Correct	173 ms	85248 KB	Output is correct
64	Correct	130 ms	80148 KB	Output is correct
65	Correct	27 ms	55916 KB	Output is correct
66	Correct	145 ms	80336 KB	Output is correct
67	Correct	30 ms	55936 KB	Output is correct
68	Correct	30 ms	55892 KB	Output is correct
69	Correct	100 ms	80260 KB	Output is correct
70	Correct	29 ms	56012 KB	Output is correct
71	Correct	114 ms	79836 KB	Output is correct
72	Correct	181 ms	81552 KB	Output is correct
73	Correct	30 ms	55116 KB	Output is correct
74	Correct	143 ms	85340 KB	Output is correct
75	Correct	142 ms	83780 KB	Output is correct
76	Correct	28 ms	55892 KB	Output is correct
77	Correct	29 ms	55892 KB	Output is correct
78	Correct	96 ms	78996 KB	Output is correct
79	Correct	196 ms	94292 KB	Output is correct
80	Correct	30 ms	56144 KB	Output is correct
81	Correct	33 ms	55864 KB	Output is correct
82	Correct	26 ms	55124 KB	Output is correct
83	Correct	29 ms	55072 KB	Output is correct
84	Correct	30 ms	55788 KB	Output is correct
85	Correct	147 ms	83300 KB	Output is correct
86	Correct	28 ms	55852 KB	Output is correct
87	Correct	123 ms	81036 KB	Output is correct
88	Correct	27 ms	55156 KB	Output is correct
89	Correct	136 ms	80588 KB	Output is correct
90	Correct	164 ms	84548 KB	Output is correct
91	Correct	251 ms	95820 KB	Output is correct
92	Correct	94 ms	80272 KB	Output is correct
93	Correct	29 ms	55968 KB	Output is correct
94	Correct	26 ms	55096 KB	Output is correct
95	Correct	185 ms	93296 KB	Output is correct
96	Correct	251 ms	98356 KB	Output is correct
97	Correct	29 ms	55884 KB	Output is correct
98	Correct	26 ms	55124 KB	Output is correct
99	Correct	124 ms	84368 KB	Output is correct
100	Correct	28 ms	55976 KB	Output is correct
101	Correct	142 ms	82488 KB	Output is correct
102	Correct	266 ms	98124 KB	Output is correct
103	Correct	29 ms	56276 KB	Output is correct
104	Correct	30 ms	56396 KB	Output is correct
105	Correct	32 ms	55892 KB	Output is correct
106	Correct	28 ms	55888 KB	Output is correct
107	Correct	27 ms	55992 KB	Output is correct
108	Correct	760 ms	196888 KB	Output is correct
109	Correct	1113 ms	191452 KB	Output is correct
110	Correct	1020 ms	200116 KB	Output is correct
111	Correct	1865 ms	262144 KB	Output is correct
112	Correct	1502 ms	235352 KB	Output is correct
113	Correct	1219 ms	239524 KB	Output is correct
114	Correct	714 ms	174236 KB	Output is correct
115	Correct	683 ms	174284 KB	Output is correct
116	Correct	866 ms	180548 KB	Output is correct
117	Correct	1861 ms	251408 KB	Output is correct
118	Correct	739 ms	174772 KB	Output is correct
119	Correct	1797 ms	250356 KB	Output is correct
120	Runtime error	1838 ms	262144 KB	Execution killed with signal 9
121	Halted	0 ms	0 KB	-

답안 #694078

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 24.0 / 24.0

Subtask #3 14.0 / 14.0

Subtask #4 22.0 / 22.0

Subtask #5 0 / 30.0

Subtask #1
10.0 / 10.0

Subtask #2
24.0 / 24.0

Subtask #3
14.0 / 14.0

Subtask #4
22.0 / 22.0

Subtask #5
0 / 30.0