답안 #359153

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
359153	2021-01-26T11:48:48 Z	Nima_Naderi	Mergers (JOI19_mergers)	C++14	100 / 100	1402 ms	128096 KB

mergers

///In the name of GOD
//#pragma GCC optimize("O2")
#include<bits/stdc++.h>
using namespace std;

//typedef long long ll;
typedef int ll;
const ll MXN = 5e5 + 10;
ll n, k, leaf;
ll A[MXN], has[MXN], dad[MXN], hd[MXN];
ll Par[MXN], Sz[MXN], dis[MXN];
ll sub[MXN], hvs[MXN];
vector<ll> adj[MXN], G[MXN], Col[MXN];
vector<pair<ll, ll>> E;
ll Find(ll x){
    return (x == Par[x] ? x : Par[x] = Find(Par[x]));
}
void Union(ll x, ll y){
    x = Find(x), y = Find(y);
    if(x == y) return;
    if(Sz[x] < Sz[y]) swap(x, y);
    Sz[x] += Sz[y], Par[y] = x;
}
void prep(ll u, ll par){
    sub[u] ++, dad[u] = par;
    if(A[u]) Col[A[u]].push_back(u);
    for(auto v : adj[u]){
        if(v == par) continue;
        dis[v] = dis[u] + 1;
        prep(v, u);
        sub[u] += sub[v];
        if(sub[v] > sub[hvs[u]]) hvs[u] = v;
    }
}
void dfs(ll u, ll par, ll head){
    hd[u] = head;
    if(hvs[u]) dfs(hvs[u], u, head);
    for(auto v : adj[u]){
        if(v == par || v == hvs[u]) continue;
        dfs(v, u, v);
    }
}
void flood(ll u, ll par){
    for(auto v : adj[u]){
        if(v == par) continue;
        flood(v, u), has[u] += has[v];
        if(has[v]) Union(u, v);
    }
}
ll LCA(ll u, ll v){
    while(hd[u] != hd[v]){
        if(dis[hd[u]] > dis[hd[v]]) swap(u, v);
        v = dad[hd[v]];
    }
    if(dis[u] > dis[v]) swap(u, v);
    return u;
}
int main(){
    ios::sync_with_stdio(0);cin.tie(0); cout.tie(0);
    cin >> n >> k;
    iota(Par + 1, Par + n + 1, 1), fill(Sz + 1, Sz + n + 1, 1);
    for(int i = 1; i < n; i ++){
        ll u, v; cin >> u >> v;
        adj[u].push_back(v), adj[v].push_back(u);
        E.push_back({u, v});
    }
    for(int i = 1; i <= n; i ++) cin >> A[i];
    prep(1, 0), dfs(1, 0, 1);
    for(int i = 1; i <= k; i ++){
        for(int j = 1; j < Col[i].size(); j ++){
            ll u = Col[i][j - 1], v = Col[i][j];
            has[u] ++, has[v] ++, has[LCA(u, v)] -= 2;
        }
    }
    flood(1, 0);
    for(auto e : E){
        ll u, v; tie(u, v) = e;
        u = Find(u), v = Find(v);
        if(u == v) continue;
        G[u].push_back(v), G[v].push_back(u);
    }
    for(int i = 1; i <= n; i ++) leaf += (Find(i) == i && G[i].size() == 1);
    cout << (leaf + 1) / 2 << '\n';
    return 0;
}
/*!
    HE'S AN INSTIGATOR,
    ENEMY ELIMINATOR,
    AND WHEN HE KNOCKS YOU BETTER
    YOU BETTER LET HIM IN.
*/
//! N.N

Compilation message

mergers.cpp: In function 'int main()':
mergers.cpp:70:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |         for(int j = 1; j < Col[i].size(); j ++){
      |                        ~~^~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	35564 KB	Output is correct
2	Correct	25 ms	35692 KB	Output is correct
3	Correct	25 ms	35692 KB	Output is correct
4	Correct	25 ms	35564 KB	Output is correct
5	Correct	25 ms	35564 KB	Output is correct
6	Correct	26 ms	35692 KB	Output is correct
7	Correct	25 ms	35564 KB	Output is correct
8	Correct	26 ms	35692 KB	Output is correct
9	Correct	25 ms	35564 KB	Output is correct
10	Correct	25 ms	35564 KB	Output is correct
11	Correct	25 ms	35692 KB	Output is correct
12	Correct	25 ms	35692 KB	Output is correct
13	Correct	43 ms	35564 KB	Output is correct
14	Correct	46 ms	35616 KB	Output is correct
15	Correct	25 ms	35692 KB	Output is correct
16	Correct	24 ms	35564 KB	Output is correct
17	Correct	26 ms	35564 KB	Output is correct
18	Correct	44 ms	35692 KB	Output is correct
19	Correct	25 ms	35564 KB	Output is correct
20	Correct	25 ms	35564 KB	Output is correct
21	Correct	27 ms	35692 KB	Output is correct
22	Correct	25 ms	35692 KB	Output is correct
23	Correct	26 ms	35564 KB	Output is correct
24	Correct	25 ms	35660 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	35564 KB	Output is correct
2	Correct	25 ms	35692 KB	Output is correct
3	Correct	25 ms	35692 KB	Output is correct
4	Correct	25 ms	35564 KB	Output is correct
5	Correct	25 ms	35564 KB	Output is correct
6	Correct	26 ms	35692 KB	Output is correct
7	Correct	25 ms	35564 KB	Output is correct
8	Correct	26 ms	35692 KB	Output is correct
9	Correct	25 ms	35564 KB	Output is correct
10	Correct	25 ms	35564 KB	Output is correct
11	Correct	25 ms	35692 KB	Output is correct
12	Correct	25 ms	35692 KB	Output is correct
13	Correct	43 ms	35564 KB	Output is correct
14	Correct	46 ms	35616 KB	Output is correct
15	Correct	25 ms	35692 KB	Output is correct
16	Correct	24 ms	35564 KB	Output is correct
17	Correct	26 ms	35564 KB	Output is correct
18	Correct	44 ms	35692 KB	Output is correct
19	Correct	25 ms	35564 KB	Output is correct
20	Correct	25 ms	35564 KB	Output is correct
21	Correct	27 ms	35692 KB	Output is correct
22	Correct	25 ms	35692 KB	Output is correct
23	Correct	26 ms	35564 KB	Output is correct
24	Correct	25 ms	35660 KB	Output is correct
25	Correct	27 ms	35692 KB	Output is correct
26	Correct	49 ms	36076 KB	Output is correct
27	Correct	27 ms	35948 KB	Output is correct
28	Correct	27 ms	36204 KB	Output is correct
29	Correct	28 ms	36076 KB	Output is correct
30	Correct	28 ms	35948 KB	Output is correct
31	Correct	26 ms	35692 KB	Output is correct
32	Correct	27 ms	36204 KB	Output is correct
33	Correct	25 ms	35692 KB	Output is correct
34	Correct	26 ms	35948 KB	Output is correct
35	Correct	28 ms	36076 KB	Output is correct
36	Correct	28 ms	35948 KB	Output is correct
37	Correct	27 ms	35948 KB	Output is correct
38	Correct	25 ms	35816 KB	Output is correct
39	Correct	27 ms	35948 KB	Output is correct
40	Correct	30 ms	35948 KB	Output is correct
41	Correct	72 ms	35948 KB	Output is correct
42	Correct	63 ms	35948 KB	Output is correct
43	Correct	62 ms	36204 KB	Output is correct
44	Correct	29 ms	35692 KB	Output is correct
45	Correct	31 ms	36076 KB	Output is correct
46	Correct	27 ms	35948 KB	Output is correct
47	Correct	29 ms	35588 KB	Output is correct
48	Correct	30 ms	35948 KB	Output is correct
49	Correct	49 ms	36064 KB	Output is correct
50	Correct	28 ms	36204 KB	Output is correct
51	Correct	51 ms	35948 KB	Output is correct
52	Correct	30 ms	35948 KB	Output is correct
53	Correct	28 ms	35948 KB	Output is correct
54	Correct	29 ms	35948 KB	Output is correct

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	35564 KB	Output is correct
2	Correct	25 ms	35692 KB	Output is correct
3	Correct	25 ms	35692 KB	Output is correct
4	Correct	25 ms	35564 KB	Output is correct
5	Correct	25 ms	35564 KB	Output is correct
6	Correct	26 ms	35692 KB	Output is correct
7	Correct	25 ms	35564 KB	Output is correct
8	Correct	26 ms	35692 KB	Output is correct
9	Correct	25 ms	35564 KB	Output is correct
10	Correct	25 ms	35564 KB	Output is correct
11	Correct	25 ms	35692 KB	Output is correct
12	Correct	25 ms	35692 KB	Output is correct
13	Correct	43 ms	35564 KB	Output is correct
14	Correct	46 ms	35616 KB	Output is correct
15	Correct	25 ms	35692 KB	Output is correct
16	Correct	24 ms	35564 KB	Output is correct
17	Correct	26 ms	35564 KB	Output is correct
18	Correct	44 ms	35692 KB	Output is correct
19	Correct	25 ms	35564 KB	Output is correct
20	Correct	25 ms	35564 KB	Output is correct
21	Correct	27 ms	35692 KB	Output is correct
22	Correct	25 ms	35692 KB	Output is correct
23	Correct	26 ms	35564 KB	Output is correct
24	Correct	25 ms	35660 KB	Output is correct
25	Correct	29 ms	35692 KB	Output is correct
26	Correct	89 ms	45020 KB	Output is correct
27	Correct	138 ms	45152 KB	Output is correct
28	Correct	27 ms	35948 KB	Output is correct
29	Correct	25 ms	35692 KB	Output is correct
30	Correct	25 ms	35692 KB	Output is correct
31	Correct	150 ms	45024 KB	Output is correct
32	Correct	26 ms	35948 KB	Output is correct
33	Correct	166 ms	52372 KB	Output is correct
34	Correct	145 ms	45152 KB	Output is correct
35	Correct	26 ms	35948 KB	Output is correct
36	Correct	147 ms	45920 KB	Output is correct
37	Correct	30 ms	35948 KB	Output is correct
38	Correct	28 ms	35948 KB	Output is correct
39	Correct	128 ms	45024 KB	Output is correct
40	Correct	27 ms	36204 KB	Output is correct
41	Correct	137 ms	45408 KB	Output is correct
42	Correct	151 ms	47456 KB	Output is correct
43	Correct	25 ms	35692 KB	Output is correct
44	Correct	140 ms	52832 KB	Output is correct
45	Correct	136 ms	48864 KB	Output is correct
46	Correct	29 ms	35948 KB	Output is correct
47	Correct	27 ms	35948 KB	Output is correct

Subtask #4
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	92 ms	45020 KB	Output is correct
2	Correct	154 ms	51164 KB	Output is correct
3	Correct	27 ms	36076 KB	Output is correct
4	Correct	28 ms	35948 KB	Output is correct
5	Correct	32 ms	35692 KB	Output is correct
6	Correct	30 ms	35692 KB	Output is correct
7	Correct	26 ms	35868 KB	Output is correct
8	Correct	198 ms	46944 KB	Output is correct
9	Correct	28 ms	35948 KB	Output is correct
10	Correct	146 ms	45416 KB	Output is correct
11	Correct	26 ms	35692 KB	Output is correct
12	Correct	173 ms	45416 KB	Output is correct
13	Correct	168 ms	47072 KB	Output is correct
14	Correct	195 ms	51296 KB	Output is correct
15	Correct	100 ms	45024 KB	Output is correct
16	Correct	27 ms	35948 KB	Output is correct
17	Correct	25 ms	35692 KB	Output is correct
18	Correct	128 ms	50528 KB	Output is correct
19	Correct	212 ms	55136 KB	Output is correct
20	Correct	29 ms	35948 KB	Output is correct
21	Correct	26 ms	35692 KB	Output is correct
22	Correct	114 ms	46940 KB	Output is correct
23	Correct	28 ms	35948 KB	Output is correct
24	Correct	152 ms	45792 KB	Output is correct
25	Correct	229 ms	53728 KB	Output is correct
26	Correct	29 ms	36152 KB	Output is correct
27	Correct	32 ms	36204 KB	Output is correct
28	Correct	26 ms	35948 KB	Output is correct
29	Correct	28 ms	35948 KB	Output is correct
30	Correct	26 ms	35948 KB	Output is correct

Subtask #5
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	35564 KB	Output is correct
2	Correct	25 ms	35692 KB	Output is correct
3	Correct	25 ms	35692 KB	Output is correct
4	Correct	25 ms	35564 KB	Output is correct
5	Correct	25 ms	35564 KB	Output is correct
6	Correct	26 ms	35692 KB	Output is correct
7	Correct	25 ms	35564 KB	Output is correct
8	Correct	26 ms	35692 KB	Output is correct
9	Correct	25 ms	35564 KB	Output is correct
10	Correct	25 ms	35564 KB	Output is correct
11	Correct	25 ms	35692 KB	Output is correct
12	Correct	25 ms	35692 KB	Output is correct
13	Correct	43 ms	35564 KB	Output is correct
14	Correct	46 ms	35616 KB	Output is correct
15	Correct	25 ms	35692 KB	Output is correct
16	Correct	24 ms	35564 KB	Output is correct
17	Correct	26 ms	35564 KB	Output is correct
18	Correct	44 ms	35692 KB	Output is correct
19	Correct	25 ms	35564 KB	Output is correct
20	Correct	25 ms	35564 KB	Output is correct
21	Correct	27 ms	35692 KB	Output is correct
22	Correct	25 ms	35692 KB	Output is correct
23	Correct	26 ms	35564 KB	Output is correct
24	Correct	25 ms	35660 KB	Output is correct
25	Correct	27 ms	35692 KB	Output is correct
26	Correct	49 ms	36076 KB	Output is correct
27	Correct	27 ms	35948 KB	Output is correct
28	Correct	27 ms	36204 KB	Output is correct
29	Correct	28 ms	36076 KB	Output is correct
30	Correct	28 ms	35948 KB	Output is correct
31	Correct	26 ms	35692 KB	Output is correct
32	Correct	27 ms	36204 KB	Output is correct
33	Correct	25 ms	35692 KB	Output is correct
34	Correct	26 ms	35948 KB	Output is correct
35	Correct	28 ms	36076 KB	Output is correct
36	Correct	28 ms	35948 KB	Output is correct
37	Correct	27 ms	35948 KB	Output is correct
38	Correct	25 ms	35816 KB	Output is correct
39	Correct	27 ms	35948 KB	Output is correct
40	Correct	30 ms	35948 KB	Output is correct
41	Correct	72 ms	35948 KB	Output is correct
42	Correct	63 ms	35948 KB	Output is correct
43	Correct	62 ms	36204 KB	Output is correct
44	Correct	29 ms	35692 KB	Output is correct
45	Correct	31 ms	36076 KB	Output is correct
46	Correct	27 ms	35948 KB	Output is correct
47	Correct	29 ms	35588 KB	Output is correct
48	Correct	30 ms	35948 KB	Output is correct
49	Correct	49 ms	36064 KB	Output is correct
50	Correct	28 ms	36204 KB	Output is correct
51	Correct	51 ms	35948 KB	Output is correct
52	Correct	30 ms	35948 KB	Output is correct
53	Correct	28 ms	35948 KB	Output is correct
54	Correct	29 ms	35948 KB	Output is correct
55	Correct	29 ms	35692 KB	Output is correct
56	Correct	89 ms	45020 KB	Output is correct
57	Correct	138 ms	45152 KB	Output is correct
58	Correct	27 ms	35948 KB	Output is correct
59	Correct	25 ms	35692 KB	Output is correct
60	Correct	25 ms	35692 KB	Output is correct
61	Correct	150 ms	45024 KB	Output is correct
62	Correct	26 ms	35948 KB	Output is correct
63	Correct	166 ms	52372 KB	Output is correct
64	Correct	145 ms	45152 KB	Output is correct
65	Correct	26 ms	35948 KB	Output is correct
66	Correct	147 ms	45920 KB	Output is correct
67	Correct	30 ms	35948 KB	Output is correct
68	Correct	28 ms	35948 KB	Output is correct
69	Correct	128 ms	45024 KB	Output is correct
70	Correct	27 ms	36204 KB	Output is correct
71	Correct	137 ms	45408 KB	Output is correct
72	Correct	151 ms	47456 KB	Output is correct
73	Correct	25 ms	35692 KB	Output is correct
74	Correct	140 ms	52832 KB	Output is correct
75	Correct	136 ms	48864 KB	Output is correct
76	Correct	29 ms	35948 KB	Output is correct
77	Correct	27 ms	35948 KB	Output is correct
78	Correct	92 ms	45020 KB	Output is correct
79	Correct	154 ms	51164 KB	Output is correct
80	Correct	27 ms	36076 KB	Output is correct
81	Correct	28 ms	35948 KB	Output is correct
82	Correct	32 ms	35692 KB	Output is correct
83	Correct	30 ms	35692 KB	Output is correct
84	Correct	26 ms	35868 KB	Output is correct
85	Correct	198 ms	46944 KB	Output is correct
86	Correct	28 ms	35948 KB	Output is correct
87	Correct	146 ms	45416 KB	Output is correct
88	Correct	26 ms	35692 KB	Output is correct
89	Correct	173 ms	45416 KB	Output is correct
90	Correct	168 ms	47072 KB	Output is correct
91	Correct	195 ms	51296 KB	Output is correct
92	Correct	100 ms	45024 KB	Output is correct
93	Correct	27 ms	35948 KB	Output is correct
94	Correct	25 ms	35692 KB	Output is correct
95	Correct	128 ms	50528 KB	Output is correct
96	Correct	212 ms	55136 KB	Output is correct
97	Correct	29 ms	35948 KB	Output is correct
98	Correct	26 ms	35692 KB	Output is correct
99	Correct	114 ms	46940 KB	Output is correct
100	Correct	28 ms	35948 KB	Output is correct
101	Correct	152 ms	45792 KB	Output is correct
102	Correct	229 ms	53728 KB	Output is correct
103	Correct	29 ms	36152 KB	Output is correct
104	Correct	32 ms	36204 KB	Output is correct
105	Correct	26 ms	35948 KB	Output is correct
106	Correct	28 ms	35948 KB	Output is correct
107	Correct	26 ms	35948 KB	Output is correct
108	Correct	767 ms	82732 KB	Output is correct
109	Correct	971 ms	96596 KB	Output is correct
110	Correct	937 ms	108616 KB	Output is correct
111	Correct	1352 ms	128096 KB	Output is correct
112	Correct	1231 ms	113360 KB	Output is correct
113	Correct	945 ms	102712 KB	Output is correct
114	Correct	922 ms	78512 KB	Output is correct
115	Correct	892 ms	79444 KB	Output is correct
116	Correct	1074 ms	79516 KB	Output is correct
117	Correct	1231 ms	106812 KB	Output is correct
118	Correct	878 ms	77660 KB	Output is correct
119	Correct	1253 ms	106924 KB	Output is correct
120	Correct	1402 ms	120256 KB	Output is correct
121	Correct	1267 ms	106844 KB	Output is correct
122	Correct	1178 ms	87640 KB	Output is correct
123	Correct	944 ms	105800 KB	Output is correct
124	Correct	1237 ms	99668 KB	Output is correct

답안 #359153

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 30.0 / 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
30.0 / 30.0