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답안 #987112

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
987112 2024-05-21T22:29:11 Z OAleksa Mergers (JOI19_mergers) C++14
70 / 100
 1716 ms 262144 KB 
#include <bits/stdc++.h>
#define f first
#define s second
using namespace std;
const int N = 5e5 + 69;
int n, k, a[N], ans, cc[N], is[N], have[N];
vector<int> g[N], c[N];
vector<int> t[N];
map<int, int> cnt[N];
void dfs(int v, int p) {
	cnt[v][a[v]] = 1;
	if (c[a[v]].size() == 1)
		have[v] = 1;
	for (auto u : g[v]) {
		if (u == p)
			continue;
		dfs(u, v);
		int o = have[v];
		if (cnt[u].size() > cnt[v].size()) {
			have[v] += have[u];
			swap(cnt[u], cnt[v]);
		}
		else
			o = 0;
		for (auto j : cnt[u]) {
			cnt[v][j.f] += j.s;
			have[v] += (cnt[v][j.f] == (int)c[j.f].size());
		}
		have[v] -= o;
	}
	assert(have[v] <= cnt[v].size());
	if (have[v] == cnt[v].size())
		cc[v] = 1;
}
void build(int v, int p, int c) {
	int x = c;
	if (cc[v] && v > 1) {
		t[v].push_back(c);
		t[c].push_back(v);
		x = v;
	}
	for (auto u : g[v]) {
		if (u == p)
			continue;
		build(u, v, x);
	}
}

signed main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int tt = 1;
  //cin >> tt;
  while (tt--) {
  	cin >> n >> k;
  	for (int i = 1;i <= n - 1;i++) {
  		int a, b;
  		cin >> a >> b;
  		g[a].push_back(b);
  		g[b].push_back(a);
  	}
  	for (int i = 1;i <= n;i++) {
  		cin >> a[i];
  		c[a[i]].push_back(i);
  	}
  	dfs(1, 0);
  	build(1, 0, 1);
 		int o = 0;
 		assert(cc[1]);
 		for (int i = 1;i <= n;i++) {
 			if (cc[i] && (int)t[i].size() == 1)
				o += 1;		
  	}
  	ans = (o + 1) / 2;
  	cout << ans << '\n';
  }
  return 0; 
}

Compilation message

In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from mergers.cpp:1:
mergers.cpp: In function 'void dfs(int, int)':
mergers.cpp:31:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::map<int, int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |  assert(have[v] <= cnt[v].size());
      |         ~~~~~~~~^~~~~~~~~~~~~~~~
mergers.cpp:32:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::map<int, int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |  if (have[v] == cnt[v].size())
      |      ~~~~~~~~^~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 64088 KB Output is correct
2 Correct 15 ms 64092 KB Output is correct
3 Correct 16 ms 64092 KB Output is correct
4 Correct 19 ms 64092 KB Output is correct
5 Correct 19 ms 64092 KB Output is correct
6 Correct 17 ms 64092 KB Output is correct
7 Correct 18 ms 64240 KB Output is correct
8 Correct 18 ms 64260 KB Output is correct
9 Correct 19 ms 64092 KB Output is correct
10 Correct 16 ms 64200 KB Output is correct
11 Correct 21 ms 64368 KB Output is correct
12 Correct 19 ms 62040 KB Output is correct
13 Correct 19 ms 64092 KB Output is correct
14 Correct 19 ms 64092 KB Output is correct
15 Correct 19 ms 64088 KB Output is correct
16 Correct 19 ms 64092 KB Output is correct
17 Correct 19 ms 64092 KB Output is correct
18 Correct 19 ms 64092 KB Output is correct
19 Correct 18 ms 64092 KB Output is correct
20 Correct 15 ms 64092 KB Output is correct
21 Correct 16 ms 64092 KB Output is correct
22 Correct 19 ms 64092 KB Output is correct
23 Correct 15 ms 64092 KB Output is correct
24 Correct 20 ms 64088 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 64088 KB Output is correct
2 Correct 15 ms 64092 KB Output is correct
3 Correct 16 ms 64092 KB Output is correct
4 Correct 19 ms 64092 KB Output is correct
5 Correct 19 ms 64092 KB Output is correct
6 Correct 17 ms 64092 KB Output is correct
7 Correct 18 ms 64240 KB Output is correct
8 Correct 18 ms 64260 KB Output is correct
9 Correct 19 ms 64092 KB Output is correct
10 Correct 16 ms 64200 KB Output is correct
11 Correct 21 ms 64368 KB Output is correct
12 Correct 19 ms 62040 KB Output is correct
13 Correct 19 ms 64092 KB Output is correct
14 Correct 19 ms 64092 KB Output is correct
15 Correct 19 ms 64088 KB Output is correct
16 Correct 19 ms 64092 KB Output is correct
17 Correct 19 ms 64092 KB Output is correct
18 Correct 19 ms 64092 KB Output is correct
19 Correct 18 ms 64092 KB Output is correct
20 Correct 15 ms 64092 KB Output is correct
21 Correct 16 ms 64092 KB Output is correct
22 Correct 19 ms 64092 KB Output is correct
23 Correct 15 ms 64092 KB Output is correct
24 Correct 20 ms 64088 KB Output is correct
25 Correct 15 ms 64088 KB Output is correct
26 Correct 18 ms 64860 KB Output is correct
27 Correct 17 ms 64344 KB Output is correct
28 Correct 23 ms 64860 KB Output is correct
29 Correct 23 ms 65116 KB Output is correct
30 Correct 21 ms 64604 KB Output is correct
31 Correct 18 ms 64092 KB Output is correct
32 Correct 22 ms 65112 KB Output is correct
33 Correct 18 ms 64244 KB Output is correct
34 Correct 17 ms 64348 KB Output is correct
35 Correct 24 ms 65004 KB Output is correct
36 Correct 17 ms 64348 KB Output is correct
37 Correct 22 ms 64860 KB Output is correct
38 Correct 18 ms 64092 KB Output is correct
39 Correct 22 ms 64936 KB Output is correct
40 Correct 18 ms 64348 KB Output is correct
41 Correct 22 ms 64720 KB Output is correct
42 Correct 21 ms 64604 KB Output is correct
43 Correct 20 ms 65112 KB Output is correct
44 Correct 18 ms 64088 KB Output is correct
45 Correct 21 ms 64856 KB Output is correct
46 Correct 22 ms 64600 KB Output is correct
47 Correct 20 ms 64092 KB Output is correct
48 Correct 18 ms 64600 KB Output is correct
49 Correct 22 ms 64604 KB Output is correct
50 Correct 22 ms 64860 KB Output is correct
51 Correct 20 ms 64604 KB Output is correct
52 Correct 19 ms 64348 KB Output is correct
53 Correct 21 ms 64604 KB Output is correct
54 Correct 21 ms 64604 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 64088 KB Output is correct
2 Correct 15 ms 64092 KB Output is correct
3 Correct 16 ms 64092 KB Output is correct
4 Correct 19 ms 64092 KB Output is correct
5 Correct 19 ms 64092 KB Output is correct
6 Correct 17 ms 64092 KB Output is correct
7 Correct 18 ms 64240 KB Output is correct
8 Correct 18 ms 64260 KB Output is correct
9 Correct 19 ms 64092 KB Output is correct
10 Correct 16 ms 64200 KB Output is correct
11 Correct 21 ms 64368 KB Output is correct
12 Correct 19 ms 62040 KB Output is correct
13 Correct 19 ms 64092 KB Output is correct
14 Correct 19 ms 64092 KB Output is correct
15 Correct 19 ms 64088 KB Output is correct
16 Correct 19 ms 64092 KB Output is correct
17 Correct 19 ms 64092 KB Output is correct
18 Correct 19 ms 64092 KB Output is correct
19 Correct 18 ms 64092 KB Output is correct
20 Correct 15 ms 64092 KB Output is correct
21 Correct 16 ms 64092 KB Output is correct
22 Correct 19 ms 64092 KB Output is correct
23 Correct 15 ms 64092 KB Output is correct
24 Correct 20 ms 64088 KB Output is correct
25 Correct 15 ms 64092 KB Output is correct
26 Correct 79 ms 72904 KB Output is correct
27 Correct 106 ms 79176 KB Output is correct
28 Correct 21 ms 64348 KB Output is correct
29 Correct 18 ms 64088 KB Output is correct
30 Correct 18 ms 64092 KB Output is correct
31 Correct 74 ms 72528 KB Output is correct
32 Correct 17 ms 64344 KB Output is correct
33 Correct 102 ms 87044 KB Output is correct
34 Correct 105 ms 77908 KB Output is correct
35 Correct 20 ms 64344 KB Output is correct
36 Correct 131 ms 74300 KB Output is correct
37 Correct 20 ms 64344 KB Output is correct
38 Correct 20 ms 64444 KB Output is correct
39 Correct 85 ms 72780 KB Output is correct
40 Correct 16 ms 64856 KB Output is correct
41 Correct 83 ms 72392 KB Output is correct
42 Correct 99 ms 77136 KB Output is correct
43 Correct 16 ms 64252 KB Output is correct
44 Correct 106 ms 87500 KB Output is correct
45 Correct 96 ms 81232 KB Output is correct
46 Correct 20 ms 64344 KB Output is correct
47 Correct 21 ms 64604 KB Output is correct

Subtask #4
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 79 ms 72812 KB Output is correct
2 Correct 162 ms 83688 KB Output is correct
3 Correct 21 ms 64856 KB Output is correct
4 Correct 21 ms 64604 KB Output is correct
5 Correct 15 ms 64092 KB Output is correct
6 Correct 15 ms 64092 KB Output is correct
7 Correct 21 ms 64600 KB Output is correct
8 Correct 181 ms 86864 KB Output is correct
9 Correct 20 ms 64348 KB Output is correct
10 Correct 105 ms 73004 KB Output is correct
11 Correct 18 ms 64092 KB Output is correct
12 Correct 95 ms 72788 KB Output is correct
13 Correct 151 ms 86012 KB Output is correct
14 Correct 254 ms 102740 KB Output is correct
15 Correct 79 ms 72772 KB Output is correct
16 Correct 21 ms 64604 KB Output is correct
17 Correct 18 ms 64092 KB Output is correct
18 Correct 135 ms 83272 KB Output is correct
19 Correct 214 ms 93424 KB Output is correct
20 Correct 22 ms 64604 KB Output is correct
21 Correct 19 ms 64092 KB Output is correct
22 Correct 137 ms 76948 KB Output is correct
23 Correct 21 ms 64600 KB Output is correct
24 Correct 106 ms 75320 KB Output is correct
25 Correct 196 ms 90996 KB Output is correct
26 Correct 21 ms 64604 KB Output is correct
27 Correct 21 ms 65032 KB Output is correct
28 Correct 20 ms 64444 KB Output is correct
29 Correct 21 ms 64348 KB Output is correct
30 Correct 20 ms 64632 KB Output is correct

Subtask #5
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 64088 KB Output is correct
2 Correct 15 ms 64092 KB Output is correct
3 Correct 16 ms 64092 KB Output is correct
4 Correct 19 ms 64092 KB Output is correct
5 Correct 19 ms 64092 KB Output is correct
6 Correct 17 ms 64092 KB Output is correct
7 Correct 18 ms 64240 KB Output is correct
8 Correct 18 ms 64260 KB Output is correct
9 Correct 19 ms 64092 KB Output is correct
10 Correct 16 ms 64200 KB Output is correct
11 Correct 21 ms 64368 KB Output is correct
12 Correct 19 ms 62040 KB Output is correct
13 Correct 19 ms 64092 KB Output is correct
14 Correct 19 ms 64092 KB Output is correct
15 Correct 19 ms 64088 KB Output is correct
16 Correct 19 ms 64092 KB Output is correct
17 Correct 19 ms 64092 KB Output is correct
18 Correct 19 ms 64092 KB Output is correct
19 Correct 18 ms 64092 KB Output is correct
20 Correct 15 ms 64092 KB Output is correct
21 Correct 16 ms 64092 KB Output is correct
22 Correct 19 ms 64092 KB Output is correct
23 Correct 15 ms 64092 KB Output is correct
24 Correct 20 ms 64088 KB Output is correct
25 Correct 15 ms 64088 KB Output is correct
26 Correct 18 ms 64860 KB Output is correct
27 Correct 17 ms 64344 KB Output is correct
28 Correct 23 ms 64860 KB Output is correct
29 Correct 23 ms 65116 KB Output is correct
30 Correct 21 ms 64604 KB Output is correct
31 Correct 18 ms 64092 KB Output is correct
32 Correct 22 ms 65112 KB Output is correct
33 Correct 18 ms 64244 KB Output is correct
34 Correct 17 ms 64348 KB Output is correct
35 Correct 24 ms 65004 KB Output is correct
36 Correct 17 ms 64348 KB Output is correct
37 Correct 22 ms 64860 KB Output is correct
38 Correct 18 ms 64092 KB Output is correct
39 Correct 22 ms 64936 KB Output is correct
40 Correct 18 ms 64348 KB Output is correct
41 Correct 22 ms 64720 KB Output is correct
42 Correct 21 ms 64604 KB Output is correct
43 Correct 20 ms 65112 KB Output is correct
44 Correct 18 ms 64088 KB Output is correct
45 Correct 21 ms 64856 KB Output is correct
46 Correct 22 ms 64600 KB Output is correct
47 Correct 20 ms 64092 KB Output is correct
48 Correct 18 ms 64600 KB Output is correct
49 Correct 22 ms 64604 KB Output is correct
50 Correct 22 ms 64860 KB Output is correct
51 Correct 20 ms 64604 KB Output is correct
52 Correct 19 ms 64348 KB Output is correct
53 Correct 21 ms 64604 KB Output is correct
54 Correct 21 ms 64604 KB Output is correct
55 Correct 15 ms 64092 KB Output is correct
56 Correct 79 ms 72904 KB Output is correct
57 Correct 106 ms 79176 KB Output is correct
58 Correct 21 ms 64348 KB Output is correct
59 Correct 18 ms 64088 KB Output is correct
60 Correct 18 ms 64092 KB Output is correct
61 Correct 74 ms 72528 KB Output is correct
62 Correct 17 ms 64344 KB Output is correct
63 Correct 102 ms 87044 KB Output is correct
64 Correct 105 ms 77908 KB Output is correct
65 Correct 20 ms 64344 KB Output is correct
66 Correct 131 ms 74300 KB Output is correct
67 Correct 20 ms 64344 KB Output is correct
68 Correct 20 ms 64444 KB Output is correct
69 Correct 85 ms 72780 KB Output is correct
70 Correct 16 ms 64856 KB Output is correct
71 Correct 83 ms 72392 KB Output is correct
72 Correct 99 ms 77136 KB Output is correct
73 Correct 16 ms 64252 KB Output is correct
74 Correct 106 ms 87500 KB Output is correct
75 Correct 96 ms 81232 KB Output is correct
76 Correct 20 ms 64344 KB Output is correct
77 Correct 21 ms 64604 KB Output is correct
78 Correct 79 ms 72812 KB Output is correct
79 Correct 162 ms 83688 KB Output is correct
80 Correct 21 ms 64856 KB Output is correct
81 Correct 21 ms 64604 KB Output is correct
82 Correct 15 ms 64092 KB Output is correct
83 Correct 15 ms 64092 KB Output is correct
84 Correct 21 ms 64600 KB Output is correct
85 Correct 181 ms 86864 KB Output is correct
86 Correct 20 ms 64348 KB Output is correct
87 Correct 105 ms 73004 KB Output is correct
88 Correct 18 ms 64092 KB Output is correct
89 Correct 95 ms 72788 KB Output is correct
90 Correct 151 ms 86012 KB Output is correct
91 Correct 254 ms 102740 KB Output is correct
92 Correct 79 ms 72772 KB Output is correct
93 Correct 21 ms 64604 KB Output is correct
94 Correct 18 ms 64092 KB Output is correct
95 Correct 135 ms 83272 KB Output is correct
96 Correct 214 ms 93424 KB Output is correct
97 Correct 22 ms 64604 KB Output is correct
98 Correct 19 ms 64092 KB Output is correct
99 Correct 137 ms 76948 KB Output is correct
100 Correct 21 ms 64600 KB Output is correct
101 Correct 106 ms 75320 KB Output is correct
102 Correct 196 ms 90996 KB Output is correct
103 Correct 21 ms 64604 KB Output is correct
104 Correct 21 ms 65032 KB Output is correct
105 Correct 20 ms 64444 KB Output is correct
106 Correct 21 ms 64348 KB Output is correct
107 Correct 20 ms 64632 KB Output is correct
108 Correct 1066 ms 124288 KB Output is correct
109 Correct 912 ms 144104 KB Output is correct
110 Correct 1074 ms 166704 KB Output is correct
111 Correct 1716 ms 216264 KB Output is correct
112 Correct 1493 ms 194976 KB Output is correct
113 Correct 1153 ms 158004 KB Output is correct
114 Correct 670 ms 107372 KB Output is correct
115 Correct 655 ms 107708 KB Output is correct
116 Correct 1179 ms 181996 KB Output is correct
117 Runtime error 1205 ms 262144 KB Execution killed with signal 9
118 Halted 0 ms 0 KB -