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답안 #154956

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
154956 2019-09-25T16:55:53 Z karma Mergers (JOI19_mergers) C++14
70 / 100
 3000 ms 76052 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], cc;
int in[N], out[N], Time;
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] += 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) {
    int Big = 0;
    for(int v: a[u])
        if(sz[v] > sz[Big]) Big = v;
    for(int v: a[u])
        if(v != Big) DSU(v, 0);
    if(Big) DSU(Big, 1), big[Big] = 1;
    Add(u, 1);
    if(full == nstate) choose[u] = 1, ++cc;
    if(Big) big[Big] = 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);
    if(cc == 1) return cout << 0, 0;
    for(int i = 1; i <= n; ++i) {
        a[i].clear();
        if(choose[i]) vertex.pb(mp(in[i], i));
    }
    sort(vertex.begin(), vertex.end());
    for(pii p: vertex) {
      while(!g.empty() && out[g.back()] < p.fi) g.pop_back();
      if(g.size()) a[g.back()].pb(p.se);
      g.pb(p.se);
    }
    for(int i = 1; i <= n; ++i) if(a[i].empty() && choose[i]) ++res;
    if(a[1].size() == 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 13 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 14 ms 12152 KB Output is correct
9 Correct 13 ms 12152 KB Output is correct
10 Correct 13 ms 12152 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 13 ms 12152 KB Output is correct
13 Correct 13 ms 12156 KB Output is correct
14 Correct 13 ms 12124 KB Output is correct
15 Correct 13 ms 12156 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 13 ms 12152 KB Output is correct
18 Correct 13 ms 12152 KB Output is correct
19 Correct 13 ms 12152 KB Output is correct
20 Correct 13 ms 12152 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 14 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 13 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 14 ms 12152 KB Output is correct
9 Correct 13 ms 12152 KB Output is correct
10 Correct 13 ms 12152 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 13 ms 12152 KB Output is correct
13 Correct 13 ms 12156 KB Output is correct
14 Correct 13 ms 12124 KB Output is correct
15 Correct 13 ms 12156 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 13 ms 12152 KB Output is correct
18 Correct 13 ms 12152 KB Output is correct
19 Correct 13 ms 12152 KB Output is correct
20 Correct 13 ms 12152 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 14 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 13 ms 12280 KB Output is correct
26 Correct 16 ms 12408 KB Output is correct
27 Correct 15 ms 12280 KB Output is correct
28 Correct 15 ms 12408 KB Output is correct
29 Correct 16 ms 12408 KB Output is correct
30 Correct 15 ms 12408 KB Output is correct
31 Correct 13 ms 12152 KB Output is correct
32 Correct 15 ms 12536 KB Output is correct
33 Correct 13 ms 12152 KB Output is correct
34 Correct 14 ms 12408 KB Output is correct
35 Correct 16 ms 12408 KB Output is correct
36 Correct 16 ms 12284 KB Output is correct
37 Correct 17 ms 12280 KB Output is correct
38 Correct 16 ms 12152 KB Output is correct
39 Correct 29 ms 12408 KB Output is correct
40 Correct 16 ms 12280 KB Output is correct
41 Correct 15 ms 12280 KB Output is correct
42 Correct 18 ms 12408 KB Output is correct
43 Correct 15 ms 12536 KB Output is correct
44 Correct 13 ms 12152 KB Output is correct
45 Correct 16 ms 12408 KB Output is correct
46 Correct 17 ms 12408 KB Output is correct
47 Correct 13 ms 12152 KB Output is correct
48 Correct 16 ms 12408 KB Output is correct
49 Correct 15 ms 12408 KB Output is correct
50 Correct 16 ms 12536 KB Output is correct
51 Correct 16 ms 12408 KB Output is correct
52 Correct 15 ms 12408 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 13 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 14 ms 12152 KB Output is correct
9 Correct 13 ms 12152 KB Output is correct
10 Correct 13 ms 12152 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 13 ms 12152 KB Output is correct
13 Correct 13 ms 12156 KB Output is correct
14 Correct 13 ms 12124 KB Output is correct
15 Correct 13 ms 12156 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 13 ms 12152 KB Output is correct
18 Correct 13 ms 12152 KB Output is correct
19 Correct 13 ms 12152 KB Output is correct
20 Correct 13 ms 12152 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 14 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 13 ms 12152 KB Output is correct
26 Correct 76 ms 18740 KB Output is correct
27 Correct 181 ms 18424 KB Output is correct
28 Correct 16 ms 12280 KB Output is correct
29 Correct 13 ms 12280 KB Output is correct
30 Correct 13 ms 12152 KB Output is correct
31 Correct 415 ms 18824 KB Output is correct
32 Correct 17 ms 12284 KB Output is correct
33 Correct 179 ms 24320 KB Output is correct
34 Correct 261 ms 18504 KB Output is correct
35 Correct 17 ms 12280 KB Output is correct
36 Correct 252 ms 19320 KB Output is correct
37 Correct 15 ms 12280 KB Output is correct
38 Correct 16 ms 12280 KB Output is correct
39 Correct 88 ms 18544 KB Output is correct
40 Correct 15 ms 12536 KB Output is correct
41 Correct 200 ms 18488 KB Output is correct
42 Correct 159 ms 20356 KB Output is correct
43 Correct 14 ms 12152 KB Output is correct
44 Correct 164 ms 24312 KB Output is correct
45 Correct 119 ms 21496 KB Output is correct
46 Correct 15 ms 12408 KB Output is correct
47 Correct 16 ms 12280 KB Output is correct

Subtask #4
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 78 ms 18668 KB Output is correct
2 Correct 98 ms 20972 KB Output is correct
3 Correct 16 ms 12408 KB Output is correct
4 Correct 15 ms 12280 KB Output is correct
5 Correct 13 ms 12152 KB Output is correct
6 Correct 14 ms 12152 KB Output is correct
7 Correct 15 ms 12280 KB Output is correct
8 Correct 624 ms 19416 KB Output is correct
9 Correct 17 ms 12280 KB Output is correct
10 Correct 476 ms 18808 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 457 ms 18680 KB Output is correct
13 Correct 386 ms 19576 KB Output is correct
14 Correct 285 ms 20844 KB Output is correct
15 Correct 92 ms 18544 KB Output is correct
16 Correct 15 ms 12280 KB Output is correct
17 Correct 14 ms 12100 KB Output is correct
18 Correct 107 ms 20972 KB Output is correct
19 Correct 167 ms 24092 KB Output is correct
20 Correct 16 ms 12280 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 90 ms 19692 KB Output is correct
23 Correct 18 ms 12408 KB Output is correct
24 Correct 390 ms 19036 KB Output is correct
25 Correct 161 ms 23024 KB Output is correct
26 Correct 15 ms 12408 KB Output is correct
27 Correct 18 ms 12664 KB Output is correct
28 Correct 18 ms 12280 KB Output is correct
29 Correct 15 ms 12380 KB Output is correct
30 Correct 15 ms 12408 KB Output is correct

Subtask #5
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 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 14 ms 12152 KB Output is correct
9 Correct 13 ms 12152 KB Output is correct
10 Correct 13 ms 12152 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 13 ms 12152 KB Output is correct
13 Correct 13 ms 12156 KB Output is correct
14 Correct 13 ms 12124 KB Output is correct
15 Correct 13 ms 12156 KB Output is correct
16 Correct 13 ms 12152 KB Output is correct
17 Correct 13 ms 12152 KB Output is correct
18 Correct 13 ms 12152 KB Output is correct
19 Correct 13 ms 12152 KB Output is correct
20 Correct 13 ms 12152 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 14 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 13 ms 12280 KB Output is correct
26 Correct 16 ms 12408 KB Output is correct
27 Correct 15 ms 12280 KB Output is correct
28 Correct 15 ms 12408 KB Output is correct
29 Correct 16 ms 12408 KB Output is correct
30 Correct 15 ms 12408 KB Output is correct
31 Correct 13 ms 12152 KB Output is correct
32 Correct 15 ms 12536 KB Output is correct
33 Correct 13 ms 12152 KB Output is correct
34 Correct 14 ms 12408 KB Output is correct
35 Correct 16 ms 12408 KB Output is correct
36 Correct 16 ms 12284 KB Output is correct
37 Correct 17 ms 12280 KB Output is correct
38 Correct 16 ms 12152 KB Output is correct
39 Correct 29 ms 12408 KB Output is correct
40 Correct 16 ms 12280 KB Output is correct
41 Correct 15 ms 12280 KB Output is correct
42 Correct 18 ms 12408 KB Output is correct
43 Correct 15 ms 12536 KB Output is correct
44 Correct 13 ms 12152 KB Output is correct
45 Correct 16 ms 12408 KB Output is correct
46 Correct 17 ms 12408 KB Output is correct
47 Correct 13 ms 12152 KB Output is correct
48 Correct 16 ms 12408 KB Output is correct
49 Correct 15 ms 12408 KB Output is correct
50 Correct 16 ms 12536 KB Output is correct
51 Correct 16 ms 12408 KB Output is correct
52 Correct 15 ms 12408 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 12152 KB Output is correct
56 Correct 76 ms 18740 KB Output is correct
57 Correct 181 ms 18424 KB Output is correct
58 Correct 16 ms 12280 KB Output is correct
59 Correct 13 ms 12280 KB Output is correct
60 Correct 13 ms 12152 KB Output is correct
61 Correct 415 ms 18824 KB Output is correct
62 Correct 17 ms 12284 KB Output is correct
63 Correct 179 ms 24320 KB Output is correct
64 Correct 261 ms 18504 KB Output is correct
65 Correct 17 ms 12280 KB Output is correct
66 Correct 252 ms 19320 KB Output is correct
67 Correct 15 ms 12280 KB Output is correct
68 Correct 16 ms 12280 KB Output is correct
69 Correct 88 ms 18544 KB Output is correct
70 Correct 15 ms 12536 KB Output is correct
71 Correct 200 ms 18488 KB Output is correct
72 Correct 159 ms 20356 KB Output is correct
73 Correct 14 ms 12152 KB Output is correct
74 Correct 164 ms 24312 KB Output is correct
75 Correct 119 ms 21496 KB Output is correct
76 Correct 15 ms 12408 KB Output is correct
77 Correct 16 ms 12280 KB Output is correct
78 Correct 78 ms 18668 KB Output is correct
79 Correct 98 ms 20972 KB Output is correct
80 Correct 16 ms 12408 KB Output is correct
81 Correct 15 ms 12280 KB Output is correct
82 Correct 13 ms 12152 KB Output is correct
83 Correct 14 ms 12152 KB Output is correct
84 Correct 15 ms 12280 KB Output is correct
85 Correct 624 ms 19416 KB Output is correct
86 Correct 17 ms 12280 KB Output is correct
87 Correct 476 ms 18808 KB Output is correct
88 Correct 13 ms 12152 KB Output is correct
89 Correct 457 ms 18680 KB Output is correct
90 Correct 386 ms 19576 KB Output is correct
91 Correct 285 ms 20844 KB Output is correct
92 Correct 92 ms 18544 KB Output is correct
93 Correct 15 ms 12280 KB Output is correct
94 Correct 14 ms 12100 KB Output is correct
95 Correct 107 ms 20972 KB Output is correct
96 Correct 167 ms 24092 KB Output is correct
97 Correct 16 ms 12280 KB Output is correct
98 Correct 13 ms 12152 KB Output is correct
99 Correct 90 ms 19692 KB Output is correct
100 Correct 18 ms 12408 KB Output is correct
101 Correct 390 ms 19036 KB Output is correct
102 Correct 161 ms 23024 KB Output is correct
103 Correct 15 ms 12408 KB Output is correct
104 Correct 18 ms 12664 KB Output is correct
105 Correct 18 ms 12280 KB Output is correct
106 Correct 15 ms 12380 KB Output is correct
107 Correct 15 ms 12408 KB Output is correct
108 Correct 802 ms 50392 KB Output is correct
109 Correct 1540 ms 58616 KB Output is correct
110 Correct 1050 ms 67516 KB Output is correct
111 Correct 1362 ms 76052 KB Output is correct
112 Correct 1230 ms 65768 KB Output is correct
113 Correct 775 ms 56020 KB Output is correct
114 Correct 2529 ms 44280 KB Output is correct
115 Correct 2048 ms 44268 KB Output is correct
116 Execution timed out 3053 ms 47472 KB Time limit exceeded
117 Halted 0 ms 0 KB -