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답안 #154963

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
154963 2019-09-25T17:06:32 Z karma Mergers (JOI19_mergers) C++14
100 / 100
 1524 ms 74412 KB 
#include<bits/stdc++.h>
#define Task     "test"
#define ll       long long
#define pb       emplace_back
#define mp       make_pair
#define fi       first
#define se       second

using namespace std;

const int N = int(5e5) + 5;
typedef pair<int, int> pii;

vector<int> a[N], g;
int sz[N], n, k, u, v, nstate, full, res = 0;
int cnt[N], s[N], orgcnt[N], deg[N];
int in[N], out[N], Time, Big[N];
bool big[N], choose[N];
vector<pii> vertex;

void DFS(int u, int par) {
    sz[u] = 1; in[u] = ++Time;
    for(int i = 0; i < int(a[u].size()); ++i) {
       if(a[u][i] == par) swap(a[u][i], a[u].back());
       if(a[u][i] != par) {
           DFS(a[u][i], u), sz[u] += sz[a[u][i]];
           if(sz[a[u][i]] > sz[Big[u]]) Big[u] = a[u][i];
       }
    }
    if(u != 1) a[u].pop_back();
    out[u] = Time;
}

void Add(int u, int val) {
    if(cnt[s[u]] == 0) ++nstate;
    if(cnt[s[u]] == orgcnt[s[u]]) --full;
    cnt[s[u]] += val;
    if(cnt[s[u]] == orgcnt[s[u]]) ++full;
    if(cnt[s[u]] == 0) --nstate;
    for(int v: a[u])
        if(!big[v]) Add(v, val);
}

void DSU(int u, bool keep) {
    for(int v: a[u])
        if(v != Big[u]) DSU(v, 0);
    if(Big[u]) DSU(Big[u], 1), big[Big[u]] = 1;
    Add(u, 1);
    if(full == nstate) vertex.pb(mp(in[u], u));
    if(Big[u]) big[Big[u]] = 0;
    if(!keep) Add(u, -1);
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    if(fopen(Task".inp", "r")) {
        freopen(Task".inp", "r", stdin);
        freopen(Task".out", "w", stdout);
    }
    cin >> n >> k;
    for(int i = 1; i < n; ++i) {
        cin >> u >> v;
        a[u].pb(v), a[v].pb(u);
    }
    for(int i = 1; i <= n; ++i) cin >> s[i], ++orgcnt[s[i]];
    DFS(1, 1); DSU(1, 1);
    sort(vertex.begin(), vertex.end());
    if(vertex.size() == 1) return cout << 0, 0;
    res = vertex.size();
    for(pii p: vertex) {
      while(!g.empty() && out[g.back()] < p.fi) g.pop_back();
      if(g.size()) {
        if(++deg[g.back()] == 1) --res;
      }
      g.pb(p.se);
    }
    if(deg[1] == 1) ++res;
    cout << (res + 1) / 2;
}

Compilation message

mergers.cpp: In function 'int main()':
mergers.cpp:58:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(Task".inp", "r", stdin);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
mergers.cpp:59:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(Task".out", "w", stdout);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 13 ms 12152 KB Output is correct
5 Correct 13 ms 12156 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 16 ms 12168 KB Output is correct
9 Correct 15 ms 12152 KB Output is correct
10 Correct 14 ms 12140 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 12 ms 12152 KB Output is correct
13 Correct 13 ms 12128 KB Output is correct
14 Correct 13 ms 12152 KB Output is correct
15 Correct 13 ms 12280 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 12 ms 12124 KB Output is correct
18 Correct 13 ms 12200 KB Output is correct
19 Correct 13 ms 12152 KB Output is correct
20 Correct 13 ms 12124 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12120 KB Output is correct
23 Correct 13 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 13 ms 12152 KB Output is correct
5 Correct 13 ms 12156 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 16 ms 12168 KB Output is correct
9 Correct 15 ms 12152 KB Output is correct
10 Correct 14 ms 12140 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 12 ms 12152 KB Output is correct
13 Correct 13 ms 12128 KB Output is correct
14 Correct 13 ms 12152 KB Output is correct
15 Correct 13 ms 12280 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 12 ms 12124 KB Output is correct
18 Correct 13 ms 12200 KB Output is correct
19 Correct 13 ms 12152 KB Output is correct
20 Correct 13 ms 12124 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12120 KB Output is correct
23 Correct 13 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 13 ms 12168 KB Output is correct
26 Correct 15 ms 12408 KB Output is correct
27 Correct 15 ms 12324 KB Output is correct
28 Correct 16 ms 12536 KB Output is correct
29 Correct 16 ms 12380 KB Output is correct
30 Correct 15 ms 12380 KB Output is correct
31 Correct 13 ms 12152 KB Output is correct
32 Correct 15 ms 12524 KB Output is correct
33 Correct 13 ms 12156 KB Output is correct
34 Correct 14 ms 12384 KB Output is correct
35 Correct 15 ms 12436 KB Output is correct
36 Correct 15 ms 12280 KB Output is correct
37 Correct 15 ms 12408 KB Output is correct
38 Correct 13 ms 12152 KB Output is correct
39 Correct 15 ms 12408 KB Output is correct
40 Correct 15 ms 12280 KB Output is correct
41 Correct 15 ms 12280 KB Output is correct
42 Correct 15 ms 12408 KB Output is correct
43 Correct 15 ms 12536 KB Output is correct
44 Correct 13 ms 12124 KB Output is correct
45 Correct 16 ms 12408 KB Output is correct
46 Correct 15 ms 12412 KB Output is correct
47 Correct 13 ms 12156 KB Output is correct
48 Correct 15 ms 12324 KB Output is correct
49 Correct 15 ms 12408 KB Output is correct
50 Correct 15 ms 12408 KB Output is correct
51 Correct 15 ms 12408 KB Output is correct
52 Correct 14 ms 12280 KB Output is correct
53 Correct 15 ms 12408 KB Output is correct
54 Correct 15 ms 12280 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 13 ms 12152 KB Output is correct
5 Correct 13 ms 12156 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 16 ms 12168 KB Output is correct
9 Correct 15 ms 12152 KB Output is correct
10 Correct 14 ms 12140 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 12 ms 12152 KB Output is correct
13 Correct 13 ms 12128 KB Output is correct
14 Correct 13 ms 12152 KB Output is correct
15 Correct 13 ms 12280 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 12 ms 12124 KB Output is correct
18 Correct 13 ms 12200 KB Output is correct
19 Correct 13 ms 12152 KB Output is correct
20 Correct 13 ms 12124 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12120 KB Output is correct
23 Correct 13 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 13 ms 12156 KB Output is correct
26 Correct 75 ms 18712 KB Output is correct
27 Correct 127 ms 18956 KB Output is correct
28 Correct 15 ms 12408 KB Output is correct
29 Correct 13 ms 12152 KB Output is correct
30 Correct 13 ms 12152 KB Output is correct
31 Correct 122 ms 18908 KB Output is correct
32 Correct 15 ms 12284 KB Output is correct
33 Correct 106 ms 24572 KB Output is correct
34 Correct 119 ms 18808 KB Output is correct
35 Correct 15 ms 12408 KB Output is correct
36 Correct 130 ms 19448 KB Output is correct
37 Correct 16 ms 12408 KB Output is correct
38 Correct 15 ms 12280 KB Output is correct
39 Correct 75 ms 18672 KB Output is correct
40 Correct 14 ms 12536 KB Output is correct
41 Correct 124 ms 18840 KB Output is correct
42 Correct 103 ms 20728 KB Output is correct
43 Correct 13 ms 12152 KB Output is correct
44 Correct 136 ms 24724 KB Output is correct
45 Correct 111 ms 21852 KB Output is correct
46 Correct 14 ms 12408 KB Output is correct
47 Correct 15 ms 12280 KB Output is correct

Subtask #4
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 76 ms 18672 KB Output is correct
2 Correct 96 ms 20876 KB Output is correct
3 Correct 15 ms 12408 KB Output is correct
4 Correct 15 ms 12408 KB Output is correct
5 Correct 13 ms 12152 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 14 ms 12280 KB Output is correct
8 Correct 152 ms 20220 KB Output is correct
9 Correct 15 ms 12408 KB Output is correct
10 Correct 129 ms 19420 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 125 ms 19320 KB Output is correct
13 Correct 158 ms 20232 KB Output is correct
14 Correct 145 ms 21284 KB Output is correct
15 Correct 78 ms 18664 KB Output is correct
16 Correct 15 ms 12408 KB Output is correct
17 Correct 13 ms 12148 KB Output is correct
18 Correct 93 ms 20848 KB Output is correct
19 Correct 132 ms 24680 KB Output is correct
20 Correct 15 ms 12408 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 82 ms 19628 KB Output is correct
23 Correct 15 ms 12380 KB Output is correct
24 Correct 135 ms 19644 KB Output is correct
25 Correct 129 ms 23608 KB Output is correct
26 Correct 15 ms 12372 KB Output is correct
27 Correct 15 ms 12408 KB Output is correct
28 Correct 15 ms 12408 KB Output is correct
29 Correct 14 ms 12280 KB Output is correct
30 Correct 16 ms 12408 KB Output is correct

Subtask #5
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 13 ms 12152 KB Output is correct
5 Correct 13 ms 12156 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 16 ms 12168 KB Output is correct
9 Correct 15 ms 12152 KB Output is correct
10 Correct 14 ms 12140 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 12 ms 12152 KB Output is correct
13 Correct 13 ms 12128 KB Output is correct
14 Correct 13 ms 12152 KB Output is correct
15 Correct 13 ms 12280 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 12 ms 12124 KB Output is correct
18 Correct 13 ms 12200 KB Output is correct
19 Correct 13 ms 12152 KB Output is correct
20 Correct 13 ms 12124 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12120 KB Output is correct
23 Correct 13 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 13 ms 12168 KB Output is correct
26 Correct 15 ms 12408 KB Output is correct
27 Correct 15 ms 12324 KB Output is correct
28 Correct 16 ms 12536 KB Output is correct
29 Correct 16 ms 12380 KB Output is correct
30 Correct 15 ms 12380 KB Output is correct
31 Correct 13 ms 12152 KB Output is correct
32 Correct 15 ms 12524 KB Output is correct
33 Correct 13 ms 12156 KB Output is correct
34 Correct 14 ms 12384 KB Output is correct
35 Correct 15 ms 12436 KB Output is correct
36 Correct 15 ms 12280 KB Output is correct
37 Correct 15 ms 12408 KB Output is correct
38 Correct 13 ms 12152 KB Output is correct
39 Correct 15 ms 12408 KB Output is correct
40 Correct 15 ms 12280 KB Output is correct
41 Correct 15 ms 12280 KB Output is correct
42 Correct 15 ms 12408 KB Output is correct
43 Correct 15 ms 12536 KB Output is correct
44 Correct 13 ms 12124 KB Output is correct
45 Correct 16 ms 12408 KB Output is correct
46 Correct 15 ms 12412 KB Output is correct
47 Correct 13 ms 12156 KB Output is correct
48 Correct 15 ms 12324 KB Output is correct
49 Correct 15 ms 12408 KB Output is correct
50 Correct 15 ms 12408 KB Output is correct
51 Correct 15 ms 12408 KB Output is correct
52 Correct 14 ms 12280 KB Output is correct
53 Correct 15 ms 12408 KB Output is correct
54 Correct 15 ms 12280 KB Output is correct
55 Correct 13 ms 12156 KB Output is correct
56 Correct 75 ms 18712 KB Output is correct
57 Correct 127 ms 18956 KB Output is correct
58 Correct 15 ms 12408 KB Output is correct
59 Correct 13 ms 12152 KB Output is correct
60 Correct 13 ms 12152 KB Output is correct
61 Correct 122 ms 18908 KB Output is correct
62 Correct 15 ms 12284 KB Output is correct
63 Correct 106 ms 24572 KB Output is correct
64 Correct 119 ms 18808 KB Output is correct
65 Correct 15 ms 12408 KB Output is correct
66 Correct 130 ms 19448 KB Output is correct
67 Correct 16 ms 12408 KB Output is correct
68 Correct 15 ms 12280 KB Output is correct
69 Correct 75 ms 18672 KB Output is correct
70 Correct 14 ms 12536 KB Output is correct
71 Correct 124 ms 18840 KB Output is correct
72 Correct 103 ms 20728 KB Output is correct
73 Correct 13 ms 12152 KB Output is correct
74 Correct 136 ms 24724 KB Output is correct
75 Correct 111 ms 21852 KB Output is correct
76 Correct 14 ms 12408 KB Output is correct
77 Correct 15 ms 12280 KB Output is correct
78 Correct 76 ms 18672 KB Output is correct
79 Correct 96 ms 20876 KB Output is correct
80 Correct 15 ms 12408 KB Output is correct
81 Correct 15 ms 12408 KB Output is correct
82 Correct 13 ms 12152 KB Output is correct
83 Correct 13 ms 12152 KB Output is correct
84 Correct 14 ms 12280 KB Output is correct
85 Correct 152 ms 20220 KB Output is correct
86 Correct 15 ms 12408 KB Output is correct
87 Correct 129 ms 19420 KB Output is correct
88 Correct 13 ms 12152 KB Output is correct
89 Correct 125 ms 19320 KB Output is correct
90 Correct 158 ms 20232 KB Output is correct
91 Correct 145 ms 21284 KB Output is correct
92 Correct 78 ms 18664 KB Output is correct
93 Correct 15 ms 12408 KB Output is correct
94 Correct 13 ms 12148 KB Output is correct
95 Correct 93 ms 20848 KB Output is correct
96 Correct 132 ms 24680 KB Output is correct
97 Correct 15 ms 12408 KB Output is correct
98 Correct 13 ms 12152 KB Output is correct
99 Correct 82 ms 19628 KB Output is correct
100 Correct 15 ms 12380 KB Output is correct
101 Correct 135 ms 19644 KB Output is correct
102 Correct 129 ms 23608 KB Output is correct
103 Correct 15 ms 12372 KB Output is correct
104 Correct 15 ms 12408 KB Output is correct
105 Correct 15 ms 12408 KB Output is correct
106 Correct 14 ms 12280 KB Output is correct
107 Correct 16 ms 12408 KB Output is correct
108 Correct 511 ms 44788 KB Output is correct
109 Correct 992 ms 57820 KB Output is correct
110 Correct 951 ms 66980 KB Output is correct
111 Correct 1139 ms 74412 KB Output is correct
112 Correct 1045 ms 62044 KB Output is correct
113 Correct 633 ms 50176 KB Output is correct
114 Correct 1078 ms 43904 KB Output is correct
115 Correct 987 ms 43960 KB Output is correct
116 Correct 1131 ms 45136 KB Output is correct
117 Correct 1365 ms 58404 KB Output is correct
118 Correct 1000 ms 47616 KB Output is correct
119 Correct 1232 ms 58436 KB Output is correct
120 Correct 1083 ms 71060 KB Output is correct
121 Correct 1291 ms 58500 KB Output is correct
122 Correct 1205 ms 53612 KB Output is correct
123 Correct 644 ms 55740 KB Output is correct
124 Correct 1524 ms 56136 KB Output is correct