oj.uz

답안 #766047

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
766047 2023-06-25T09:20:37 Z MISM06 Mergers (JOI19_mergers) C++14
100 / 100
 608 ms 84720 KB 
//0 1 1 0 1
//0 1 0 0 1
//1 0 0 1 1
//0 1 1 0 1
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2")
 
using namespace std;
 
#define F 			first
#define S 			second
#define pb 			push_back
#define sze			size()
#define	all(x)		x.begin() , x.end()
#define wall__		cout << "--------------------------------------\n";
#define kids		int mid = (tl + tr) >> 1, cl = v << 1, cr = v << 1 | 1
#define file_io		freopen("input.cpp", "r", stdin); freopen("output.cpp", "w", stdout);
 
typedef long long ll;
typedef long double dl;
typedef pair < int , int > pii;
typedef pair < int , ll > pil;
typedef pair < ll , int > pli;
typedef pair < ll , ll > pll;
typedef pair < int , pii > piii;
typedef pair < ll, pll > plll;
 
 
const ll N = 5e5 + 10;
const ll mod = 1e9 + 7;
const ll inf = 2e16;
const ll INF = 1e9 + 10;
const ll lg = 32;
 
int n, k, a[N], timer, c[N], sub[N], ans, b[N];
int root, cnt[N], h[N],  st[N], en[N], ord[N];
int sum;
vector < int > g[N];
bitset < N > mark;
 
void dfs0 (int v, int p) {
	sub[v] = 1; st[v] = ++timer; ord[st[v]] = v;
	h[v] = 0;
	for (auto u : g[v]) {
		if (p == u) continue;
		dfs0(u, v);
		if (sub[u] > sub[h[v]]) h[v] = u;
		sub[v] += sub[u];
	}
	en[v] = timer;
}	

void dfs (int v, int p) { 

	sum = 0;
	for (auto u : g[v]) {
		if (u == p || u == h[v]) continue;
		dfs(u, v);
		for (int i = st[u]; i <= en[u]; i++) mark[a[ord[i]]] = 0;
		sum = 0;
		cnt[v] += cnt[u];
	}
	if (h[v]) {
		dfs(h[v], v); cnt[v] += cnt[h[v]];
		for (int i = st[v]; i < st[h[v]]; i++) {
			if (mark[a[ord[i]]] == 0) {
				mark[a[ord[i]]] = 1;
				sum += c[a[ord[i]]];
			}
		}
		for (int i = en[h[v]] + 1; i <= en[v]; i++) {
			if (mark[a[ord[i]]] == 0) {
				mark[a[ord[i]]] = 1;
				sum += c[a[ord[i]]];
			}
		}
	}
	if (mark[a[v]] == 0) {
		mark[a[v]] = 1;
		sum += c[a[v]];
	}
	
	if ((sum == sub[v] && v != root)) {
		b[v] = 1;
		++cnt[v];
	}
}

void dfs1(int v, int p) {
	if (b[v] == 1) {
		if (cnt[v] == 1 || cnt[v] == cnt[root]) ++ans;
	}
	for (auto u : g[v]) {
		if (u == p) continue;
		dfs1(u, v);
	}
}
 
void solve () {
 
	cin >> n >> k;
	for (int i = 1; i < n; i++) {
		int v, u; cin >> v >> u;
		g[v].pb(u); g[u].pb(v);
	}
	for (int i = 1; i <= n; i++) {
		cin >> a[i]; ++c[a[i]];
	}
	root = 1;
	for (int i = 2; i <= n; i++) {
		if (g[i].sze > g[root].sze) root = i;
	}
	dfs0(root, 0);
	dfs(root, 0);
	dfs1(root, 0);
	cout << (ans + 1) / 2 << '\n';
 
 
}
 
 
int main() {
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	int t = 1;
	// cin >> t;
	while (t--) {solve();}
    return 0;
}
/*
*/
//shrek will AC this;

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 12116 KB Output is correct
2 Correct 5 ms 12116 KB Output is correct
3 Correct 5 ms 12072 KB Output is correct
4 Correct 5 ms 12120 KB Output is correct
5 Correct 5 ms 12136 KB Output is correct
6 Correct 5 ms 12116 KB Output is correct
7 Correct 5 ms 12028 KB Output is correct
8 Correct 5 ms 12116 KB Output is correct
9 Correct 5 ms 12116 KB Output is correct
10 Correct 5 ms 12116 KB Output is correct
11 Correct 5 ms 12116 KB Output is correct
12 Correct 5 ms 12116 KB Output is correct
13 Correct 5 ms 12116 KB Output is correct
14 Correct 5 ms 12024 KB Output is correct
15 Correct 5 ms 12116 KB Output is correct
16 Correct 7 ms 12116 KB Output is correct
17 Correct 6 ms 12100 KB Output is correct
18 Correct 5 ms 12116 KB Output is correct
19 Correct 5 ms 12116 KB Output is correct
20 Correct 5 ms 12048 KB Output is correct
21 Correct 5 ms 12116 KB Output is correct
22 Correct 6 ms 12116 KB Output is correct
23 Correct 5 ms 12116 KB Output is correct
24 Correct 5 ms 12136 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 12116 KB Output is correct
2 Correct 5 ms 12116 KB Output is correct
3 Correct 5 ms 12072 KB Output is correct
4 Correct 5 ms 12120 KB Output is correct
5 Correct 5 ms 12136 KB Output is correct
6 Correct 5 ms 12116 KB Output is correct
7 Correct 5 ms 12028 KB Output is correct
8 Correct 5 ms 12116 KB Output is correct
9 Correct 5 ms 12116 KB Output is correct
10 Correct 5 ms 12116 KB Output is correct
11 Correct 5 ms 12116 KB Output is correct
12 Correct 5 ms 12116 KB Output is correct
13 Correct 5 ms 12116 KB Output is correct
14 Correct 5 ms 12024 KB Output is correct
15 Correct 5 ms 12116 KB Output is correct
16 Correct 7 ms 12116 KB Output is correct
17 Correct 6 ms 12100 KB Output is correct
18 Correct 5 ms 12116 KB Output is correct
19 Correct 5 ms 12116 KB Output is correct
20 Correct 5 ms 12048 KB Output is correct
21 Correct 5 ms 12116 KB Output is correct
22 Correct 6 ms 12116 KB Output is correct
23 Correct 5 ms 12116 KB Output is correct
24 Correct 5 ms 12136 KB Output is correct
25 Correct 5 ms 12140 KB Output is correct
26 Correct 6 ms 12244 KB Output is correct
27 Correct 6 ms 12244 KB Output is correct
28 Correct 6 ms 12372 KB Output is correct
29 Correct 6 ms 12244 KB Output is correct
30 Correct 6 ms 12244 KB Output is correct
31 Correct 6 ms 12040 KB Output is correct
32 Correct 7 ms 12416 KB Output is correct
33 Correct 5 ms 12064 KB Output is correct
34 Correct 6 ms 12244 KB Output is correct
35 Correct 8 ms 12244 KB Output is correct
36 Correct 6 ms 12244 KB Output is correct
37 Correct 6 ms 12320 KB Output is correct
38 Correct 5 ms 12116 KB Output is correct
39 Correct 6 ms 12244 KB Output is correct
40 Correct 6 ms 12244 KB Output is correct
41 Correct 6 ms 12328 KB Output is correct
42 Correct 6 ms 12244 KB Output is correct
43 Correct 7 ms 12500 KB Output is correct
44 Correct 5 ms 12116 KB Output is correct
45 Correct 6 ms 12372 KB Output is correct
46 Correct 6 ms 12340 KB Output is correct
47 Correct 5 ms 12116 KB Output is correct
48 Correct 6 ms 12244 KB Output is correct
49 Correct 6 ms 12244 KB Output is correct
50 Correct 6 ms 12372 KB Output is correct
51 Correct 6 ms 12244 KB Output is correct
52 Correct 6 ms 12244 KB Output is correct
53 Correct 6 ms 12244 KB Output is correct
54 Correct 7 ms 12308 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 12116 KB Output is correct
2 Correct 5 ms 12116 KB Output is correct
3 Correct 5 ms 12072 KB Output is correct
4 Correct 5 ms 12120 KB Output is correct
5 Correct 5 ms 12136 KB Output is correct
6 Correct 5 ms 12116 KB Output is correct
7 Correct 5 ms 12028 KB Output is correct
8 Correct 5 ms 12116 KB Output is correct
9 Correct 5 ms 12116 KB Output is correct
10 Correct 5 ms 12116 KB Output is correct
11 Correct 5 ms 12116 KB Output is correct
12 Correct 5 ms 12116 KB Output is correct
13 Correct 5 ms 12116 KB Output is correct
14 Correct 5 ms 12024 KB Output is correct
15 Correct 5 ms 12116 KB Output is correct
16 Correct 7 ms 12116 KB Output is correct
17 Correct 6 ms 12100 KB Output is correct
18 Correct 5 ms 12116 KB Output is correct
19 Correct 5 ms 12116 KB Output is correct
20 Correct 5 ms 12048 KB Output is correct
21 Correct 5 ms 12116 KB Output is correct
22 Correct 6 ms 12116 KB Output is correct
23 Correct 5 ms 12116 KB Output is correct
24 Correct 5 ms 12136 KB Output is correct
25 Correct 5 ms 12092 KB Output is correct
26 Correct 32 ms 17936 KB Output is correct
27 Correct 50 ms 18100 KB Output is correct
28 Correct 7 ms 12244 KB Output is correct
29 Correct 6 ms 12056 KB Output is correct
30 Correct 5 ms 12116 KB Output is correct
31 Correct 44 ms 18240 KB Output is correct
32 Correct 6 ms 12244 KB Output is correct
33 Correct 52 ms 26676 KB Output is correct
34 Correct 45 ms 18004 KB Output is correct
35 Correct 6 ms 12260 KB Output is correct
36 Correct 46 ms 19052 KB Output is correct
37 Correct 6 ms 12244 KB Output is correct
38 Correct 6 ms 12244 KB Output is correct
39 Correct 35 ms 17952 KB Output is correct
40 Correct 6 ms 12500 KB Output is correct
41 Correct 43 ms 18036 KB Output is correct
42 Correct 46 ms 21188 KB Output is correct
43 Correct 5 ms 12116 KB Output is correct
44 Correct 52 ms 27072 KB Output is correct
45 Correct 47 ms 22576 KB Output is correct
46 Correct 6 ms 12244 KB Output is correct
47 Correct 7 ms 12224 KB Output is correct

Subtask #4
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 17928 KB Output is correct
2 Correct 35 ms 19168 KB Output is correct
3 Correct 7 ms 12272 KB Output is correct
4 Correct 6 ms 12244 KB Output is correct
5 Correct 6 ms 12020 KB Output is correct
6 Correct 6 ms 12020 KB Output is correct
7 Correct 6 ms 12244 KB Output is correct
8 Correct 48 ms 18636 KB Output is correct
9 Correct 6 ms 12244 KB Output is correct
10 Correct 45 ms 18408 KB Output is correct
11 Correct 6 ms 12036 KB Output is correct
12 Correct 45 ms 18424 KB Output is correct
13 Correct 50 ms 18552 KB Output is correct
14 Correct 47 ms 18892 KB Output is correct
15 Correct 33 ms 17932 KB Output is correct
16 Correct 7 ms 12244 KB Output is correct
17 Correct 5 ms 12116 KB Output is correct
18 Correct 36 ms 19060 KB Output is correct
19 Correct 51 ms 23608 KB Output is correct
20 Correct 6 ms 12340 KB Output is correct
21 Correct 5 ms 12116 KB Output is correct
22 Correct 35 ms 18968 KB Output is correct
23 Correct 6 ms 12332 KB Output is correct
24 Correct 47 ms 18380 KB Output is correct
25 Correct 49 ms 21908 KB Output is correct
26 Correct 6 ms 12244 KB Output is correct
27 Correct 7 ms 12312 KB Output is correct
28 Correct 7 ms 12244 KB Output is correct
29 Correct 6 ms 12244 KB Output is correct
30 Correct 6 ms 12244 KB Output is correct

Subtask #5
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 12116 KB Output is correct
2 Correct 5 ms 12116 KB Output is correct
3 Correct 5 ms 12072 KB Output is correct
4 Correct 5 ms 12120 KB Output is correct
5 Correct 5 ms 12136 KB Output is correct
6 Correct 5 ms 12116 KB Output is correct
7 Correct 5 ms 12028 KB Output is correct
8 Correct 5 ms 12116 KB Output is correct
9 Correct 5 ms 12116 KB Output is correct
10 Correct 5 ms 12116 KB Output is correct
11 Correct 5 ms 12116 KB Output is correct
12 Correct 5 ms 12116 KB Output is correct
13 Correct 5 ms 12116 KB Output is correct
14 Correct 5 ms 12024 KB Output is correct
15 Correct 5 ms 12116 KB Output is correct
16 Correct 7 ms 12116 KB Output is correct
17 Correct 6 ms 12100 KB Output is correct
18 Correct 5 ms 12116 KB Output is correct
19 Correct 5 ms 12116 KB Output is correct
20 Correct 5 ms 12048 KB Output is correct
21 Correct 5 ms 12116 KB Output is correct
22 Correct 6 ms 12116 KB Output is correct
23 Correct 5 ms 12116 KB Output is correct
24 Correct 5 ms 12136 KB Output is correct
25 Correct 5 ms 12140 KB Output is correct
26 Correct 6 ms 12244 KB Output is correct
27 Correct 6 ms 12244 KB Output is correct
28 Correct 6 ms 12372 KB Output is correct
29 Correct 6 ms 12244 KB Output is correct
30 Correct 6 ms 12244 KB Output is correct
31 Correct 6 ms 12040 KB Output is correct
32 Correct 7 ms 12416 KB Output is correct
33 Correct 5 ms 12064 KB Output is correct
34 Correct 6 ms 12244 KB Output is correct
35 Correct 8 ms 12244 KB Output is correct
36 Correct 6 ms 12244 KB Output is correct
37 Correct 6 ms 12320 KB Output is correct
38 Correct 5 ms 12116 KB Output is correct
39 Correct 6 ms 12244 KB Output is correct
40 Correct 6 ms 12244 KB Output is correct
41 Correct 6 ms 12328 KB Output is correct
42 Correct 6 ms 12244 KB Output is correct
43 Correct 7 ms 12500 KB Output is correct
44 Correct 5 ms 12116 KB Output is correct
45 Correct 6 ms 12372 KB Output is correct
46 Correct 6 ms 12340 KB Output is correct
47 Correct 5 ms 12116 KB Output is correct
48 Correct 6 ms 12244 KB Output is correct
49 Correct 6 ms 12244 KB Output is correct
50 Correct 6 ms 12372 KB Output is correct
51 Correct 6 ms 12244 KB Output is correct
52 Correct 6 ms 12244 KB Output is correct
53 Correct 6 ms 12244 KB Output is correct
54 Correct 7 ms 12308 KB Output is correct
55 Correct 5 ms 12092 KB Output is correct
56 Correct 32 ms 17936 KB Output is correct
57 Correct 50 ms 18100 KB Output is correct
58 Correct 7 ms 12244 KB Output is correct
59 Correct 6 ms 12056 KB Output is correct
60 Correct 5 ms 12116 KB Output is correct
61 Correct 44 ms 18240 KB Output is correct
62 Correct 6 ms 12244 KB Output is correct
63 Correct 52 ms 26676 KB Output is correct
64 Correct 45 ms 18004 KB Output is correct
65 Correct 6 ms 12260 KB Output is correct
66 Correct 46 ms 19052 KB Output is correct
67 Correct 6 ms 12244 KB Output is correct
68 Correct 6 ms 12244 KB Output is correct
69 Correct 35 ms 17952 KB Output is correct
70 Correct 6 ms 12500 KB Output is correct
71 Correct 43 ms 18036 KB Output is correct
72 Correct 46 ms 21188 KB Output is correct
73 Correct 5 ms 12116 KB Output is correct
74 Correct 52 ms 27072 KB Output is correct
75 Correct 47 ms 22576 KB Output is correct
76 Correct 6 ms 12244 KB Output is correct
77 Correct 7 ms 12224 KB Output is correct
78 Correct 33 ms 17928 KB Output is correct
79 Correct 35 ms 19168 KB Output is correct
80 Correct 7 ms 12272 KB Output is correct
81 Correct 6 ms 12244 KB Output is correct
82 Correct 6 ms 12020 KB Output is correct
83 Correct 6 ms 12020 KB Output is correct
84 Correct 6 ms 12244 KB Output is correct
85 Correct 48 ms 18636 KB Output is correct
86 Correct 6 ms 12244 KB Output is correct
87 Correct 45 ms 18408 KB Output is correct
88 Correct 6 ms 12036 KB Output is correct
89 Correct 45 ms 18424 KB Output is correct
90 Correct 50 ms 18552 KB Output is correct
91 Correct 47 ms 18892 KB Output is correct
92 Correct 33 ms 17932 KB Output is correct
93 Correct 7 ms 12244 KB Output is correct
94 Correct 5 ms 12116 KB Output is correct
95 Correct 36 ms 19060 KB Output is correct
96 Correct 51 ms 23608 KB Output is correct
97 Correct 6 ms 12340 KB Output is correct
98 Correct 5 ms 12116 KB Output is correct
99 Correct 35 ms 18968 KB Output is correct
100 Correct 6 ms 12332 KB Output is correct
101 Correct 47 ms 18380 KB Output is correct
102 Correct 49 ms 21908 KB Output is correct
103 Correct 6 ms 12244 KB Output is correct
104 Correct 7 ms 12312 KB Output is correct
105 Correct 7 ms 12244 KB Output is correct
106 Correct 6 ms 12244 KB Output is correct
107 Correct 6 ms 12244 KB Output is correct
108 Correct 290 ms 55964 KB Output is correct
109 Correct 556 ms 63904 KB Output is correct
110 Correct 559 ms 84720 KB Output is correct
111 Correct 596 ms 83644 KB Output is correct
112 Correct 537 ms 71996 KB Output is correct
113 Correct 325 ms 57148 KB Output is correct
114 Correct 432 ms 49460 KB Output is correct
115 Correct 437 ms 49584 KB Output is correct
116 Correct 478 ms 53688 KB Output is correct
117 Correct 472 ms 55784 KB Output is correct
118 Correct 429 ms 51228 KB Output is correct
119 Correct 561 ms 55872 KB Output is correct
120 Correct 560 ms 76168 KB Output is correct
121 Correct 529 ms 55876 KB Output is correct
122 Correct 532 ms 55084 KB Output is correct
123 Correct 300 ms 57384 KB Output is correct
124 Correct 608 ms 54860 KB Output is correct