oj.uz

Submission #223313

# Submission time Handle Problem Language Result Execution time Memory
223313 2020-04-15T07:09:20 Z _7_7_ Mergers (JOI19_mergers) C++14
100 / 100
 1532 ms 82944 KB 
#include <bits/stdc++.h>                                           
 
//#define int long long
//#pragma GCC optimize("Ofast")
//#pragma comment(linker, "/stack:200000000")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4")
 
 
#define file(s) freopen(s".in","r",stdin); freopen(s".out","w",stdout);
#define forev(i, b, a) for(int i = (b); i >= (a); --i)
#define forn(i, a, b) for(int i = (a); i <= (b); ++i)
#define all(x) x.begin(), x.end()
#define sz(s) (int)s.size()
#define pb push_back
#define ppb pop_back
#define mp make_pair
#define s second
#define f first
 
 
using namespace std;
 
 
typedef pair < long long, long long > pll;    
typedef pair < int, int > pii;
typedef unsigned long long ull;         
typedef vector < pii > vpii;
typedef vector < int > vi;
typedef long double ldb;  
typedef long long ll;  
typedef double db;                             
 
 
const int inf = 1e9, maxn = 4e5 + 148, mod = 1e9 + 7, N = 5e5 + 11;
const int dx[] = {1, -1, 0, 0}, dy[] = {0, 0, 1, -1}, block = 333;
const pii base = mp(1171, 3307), Mod = mp(1e9 + 7, 1e9 + 9);
const db eps = 1e-12, pi = 3.14159265359;
const ll INF = 1e18;
 
 
int n, k, v, u, cnt[N], c[N], tmp, cntC[N], ans, root, a[N], m; 
int tin[N], tout[N], timer, sum, cnt1[N], cnt2[N];
bool bad[N];
vi g[N];
 
void dfs1 (int v, int p = 0) {
	cnt[v] = 1;
	tin[v] = ++timer;
	a[timer] = v;
 
	for (auto to : g[v])
		if (to != p) {
			dfs1(to, v); 
			cnt[v] += cnt[to];
		}
 
	tout[v] = timer;
}
 
void add (int x) {
	++cnt1[x];
	if (cnt1[x] == 1)
		sum += cntC[x];
}
 
void del (int x) {
	--cnt1[x];
	if (!cnt1[x])
		sum -= cntC[x];
}
 
void dfs (int v, int p = 0, bool keep = 0) {		
    int u = -1;
	for (auto to : g[v])
		if (to != p && (u == -1 || cnt[to] > cnt[u])) 
			u = to;
 
	for (auto to : g[v])
		if (to != p && to != u)
			dfs(to, v, 0);
	
	if (u != -1)	
		dfs(u, v, 1);
	
	for (auto to : g[v]) 
		if (to != p && to != u)	
			for (int i = tin[to]; i <= tout[to]; ++i) 
				add(c[a[i]]);
 
	add(c[v]);
		
	if (v != root && cnt[v] == sum) {
		bad[v] = 1; 
		++m;
	}
	
	if (!keep) 
		for (int i = tin[v]; i <= tout[v]; ++i)
			del(c[a[i]]);
}
 
void dfs2 (int v, int p = 0) {
    cnt2[v] = bad[v];
	int cnt = 0;

	for (auto to : g[v])
		if (to != p) { 
		    dfs2(to, v);
		    if (cnt2[to])
				++cnt; 
			cnt2[v] += cnt2[to];
		}
		
 
	if (bad[v] && (!cnt || (cnt == 1 && cnt2[v] == m))) 
		++ans; 
}
 
 
main () {
	cin >> n >> k;
	if (n == 2) {
		cout << k - 1 << endl;
		return 0;
	}
 
	for (int i = 1; i < n; ++i) {
		cin >> v >> u;
		g[v].pb(u);
		g[u].pb(v);
	}
 
	for (int i = 1; i <= n; ++i) {
		cin >> c[i];
		++cntC[c[i]];
	}
 
	root = 1;
	while (sz(g[root]) == 1)
		++root;
 
	dfs1(root);
	dfs(root);
	dfs2(root);
	cout << (ans + 1) / 2 << endl;	
}

Compilation message

mergers.cpp:120:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main () {
       ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12160 KB Output is correct
2 Correct 12 ms 12160 KB Output is correct
3 Correct 12 ms 12160 KB Output is correct
4 Correct 12 ms 12160 KB Output is correct
5 Correct 12 ms 12160 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 12 ms 12160 KB Output is correct
8 Correct 12 ms 12160 KB Output is correct
9 Correct 12 ms 12160 KB Output is correct
10 Correct 12 ms 12160 KB Output is correct
11 Correct 13 ms 12160 KB Output is correct
12 Correct 12 ms 12160 KB Output is correct
13 Correct 12 ms 12160 KB Output is correct
14 Correct 12 ms 12160 KB Output is correct
15 Correct 12 ms 12160 KB Output is correct
16 Correct 12 ms 12160 KB Output is correct
17 Correct 12 ms 12160 KB Output is correct
18 Correct 12 ms 12160 KB Output is correct
19 Correct 12 ms 12160 KB Output is correct
20 Correct 11 ms 12160 KB Output is correct
21 Correct 12 ms 12032 KB Output is correct
22 Correct 12 ms 12160 KB Output is correct
23 Correct 12 ms 12160 KB Output is correct
24 Correct 12 ms 12160 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12160 KB Output is correct
2 Correct 12 ms 12160 KB Output is correct
3 Correct 12 ms 12160 KB Output is correct
4 Correct 12 ms 12160 KB Output is correct
5 Correct 12 ms 12160 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 12 ms 12160 KB Output is correct
8 Correct 12 ms 12160 KB Output is correct
9 Correct 12 ms 12160 KB Output is correct
10 Correct 12 ms 12160 KB Output is correct
11 Correct 13 ms 12160 KB Output is correct
12 Correct 12 ms 12160 KB Output is correct
13 Correct 12 ms 12160 KB Output is correct
14 Correct 12 ms 12160 KB Output is correct
15 Correct 12 ms 12160 KB Output is correct
16 Correct 12 ms 12160 KB Output is correct
17 Correct 12 ms 12160 KB Output is correct
18 Correct 12 ms 12160 KB Output is correct
19 Correct 12 ms 12160 KB Output is correct
20 Correct 11 ms 12160 KB Output is correct
21 Correct 12 ms 12032 KB Output is correct
22 Correct 12 ms 12160 KB Output is correct
23 Correct 12 ms 12160 KB Output is correct
24 Correct 12 ms 12160 KB Output is correct
25 Correct 11 ms 12160 KB Output is correct
26 Correct 19 ms 12288 KB Output is correct
27 Correct 15 ms 12288 KB Output is correct
28 Correct 16 ms 12416 KB Output is correct
29 Correct 16 ms 12288 KB Output is correct
30 Correct 17 ms 12288 KB Output is correct
31 Correct 12 ms 12160 KB Output is correct
32 Correct 16 ms 12544 KB Output is correct
33 Correct 12 ms 12160 KB Output is correct
34 Correct 15 ms 12416 KB Output is correct
35 Correct 16 ms 12416 KB Output is correct
36 Correct 16 ms 12288 KB Output is correct
37 Correct 16 ms 12288 KB Output is correct
38 Correct 12 ms 12160 KB Output is correct
39 Correct 16 ms 12288 KB Output is correct
40 Correct 16 ms 12288 KB Output is correct
41 Correct 16 ms 12288 KB Output is correct
42 Correct 15 ms 12416 KB Output is correct
43 Correct 15 ms 12544 KB Output is correct
44 Correct 12 ms 12160 KB Output is correct
45 Correct 16 ms 12416 KB Output is correct
46 Correct 16 ms 12288 KB Output is correct
47 Correct 12 ms 12160 KB Output is correct
48 Correct 16 ms 12288 KB Output is correct
49 Correct 15 ms 12416 KB Output is correct
50 Correct 16 ms 12416 KB Output is correct
51 Correct 16 ms 12288 KB Output is correct
52 Correct 15 ms 12288 KB Output is correct
53 Correct 15 ms 12416 KB Output is correct
54 Correct 16 ms 12416 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12160 KB Output is correct
2 Correct 12 ms 12160 KB Output is correct
3 Correct 12 ms 12160 KB Output is correct
4 Correct 12 ms 12160 KB Output is correct
5 Correct 12 ms 12160 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 12 ms 12160 KB Output is correct
8 Correct 12 ms 12160 KB Output is correct
9 Correct 12 ms 12160 KB Output is correct
10 Correct 12 ms 12160 KB Output is correct
11 Correct 13 ms 12160 KB Output is correct
12 Correct 12 ms 12160 KB Output is correct
13 Correct 12 ms 12160 KB Output is correct
14 Correct 12 ms 12160 KB Output is correct
15 Correct 12 ms 12160 KB Output is correct
16 Correct 12 ms 12160 KB Output is correct
17 Correct 12 ms 12160 KB Output is correct
18 Correct 12 ms 12160 KB Output is correct
19 Correct 12 ms 12160 KB Output is correct
20 Correct 11 ms 12160 KB Output is correct
21 Correct 12 ms 12032 KB Output is correct
22 Correct 12 ms 12160 KB Output is correct
23 Correct 12 ms 12160 KB Output is correct
24 Correct 12 ms 12160 KB Output is correct
25 Correct 12 ms 12160 KB Output is correct
26 Correct 148 ms 18032 KB Output is correct
27 Correct 191 ms 17752 KB Output is correct
28 Correct 16 ms 12288 KB Output is correct
29 Correct 12 ms 12160 KB Output is correct
30 Correct 12 ms 12160 KB Output is correct
31 Correct 184 ms 17784 KB Output is correct
32 Correct 15 ms 12288 KB Output is correct
33 Correct 211 ms 26360 KB Output is correct
34 Correct 186 ms 17656 KB Output is correct
35 Correct 16 ms 12288 KB Output is correct
36 Correct 188 ms 18684 KB Output is correct
37 Correct 15 ms 12288 KB Output is correct
38 Correct 16 ms 12288 KB Output is correct
39 Correct 145 ms 18032 KB Output is correct
40 Correct 16 ms 12544 KB Output is correct
41 Correct 187 ms 17784 KB Output is correct
42 Correct 192 ms 20472 KB Output is correct
43 Correct 12 ms 12160 KB Output is correct
44 Correct 196 ms 26616 KB Output is correct
45 Correct 192 ms 22140 KB Output is correct
46 Correct 15 ms 12288 KB Output is correct
47 Correct 15 ms 12288 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 150 ms 18032 KB Output is correct
2 Correct 165 ms 19056 KB Output is correct
3 Correct 16 ms 12288 KB Output is correct
4 Correct 15 ms 12288 KB Output is correct
5 Correct 12 ms 12160 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 15 ms 12288 KB Output is correct
8 Correct 227 ms 18168 KB Output is correct
9 Correct 15 ms 12288 KB Output is correct
10 Correct 204 ms 17912 KB Output is correct
11 Correct 12 ms 12160 KB Output is correct
12 Correct 192 ms 17784 KB Output is correct
13 Correct 206 ms 18168 KB Output is correct
14 Correct 211 ms 18552 KB Output is correct
15 Correct 142 ms 18036 KB Output is correct
16 Correct 15 ms 12288 KB Output is correct
17 Correct 12 ms 12160 KB Output is correct
18 Correct 173 ms 18928 KB Output is correct
19 Correct 225 ms 23416 KB Output is correct
20 Correct 16 ms 12288 KB Output is correct
21 Correct 12 ms 12160 KB Output is correct
22 Correct 164 ms 18544 KB Output is correct
23 Correct 18 ms 12368 KB Output is correct
24 Correct 218 ms 17784 KB Output is correct
25 Correct 211 ms 21744 KB Output is correct
26 Correct 16 ms 12416 KB Output is correct
27 Correct 16 ms 12416 KB Output is correct
28 Correct 17 ms 12288 KB Output is correct
29 Correct 15 ms 12288 KB Output is correct
30 Correct 16 ms 12288 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12160 KB Output is correct
2 Correct 12 ms 12160 KB Output is correct
3 Correct 12 ms 12160 KB Output is correct
4 Correct 12 ms 12160 KB Output is correct
5 Correct 12 ms 12160 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 12 ms 12160 KB Output is correct
8 Correct 12 ms 12160 KB Output is correct
9 Correct 12 ms 12160 KB Output is correct
10 Correct 12 ms 12160 KB Output is correct
11 Correct 13 ms 12160 KB Output is correct
12 Correct 12 ms 12160 KB Output is correct
13 Correct 12 ms 12160 KB Output is correct
14 Correct 12 ms 12160 KB Output is correct
15 Correct 12 ms 12160 KB Output is correct
16 Correct 12 ms 12160 KB Output is correct
17 Correct 12 ms 12160 KB Output is correct
18 Correct 12 ms 12160 KB Output is correct
19 Correct 12 ms 12160 KB Output is correct
20 Correct 11 ms 12160 KB Output is correct
21 Correct 12 ms 12032 KB Output is correct
22 Correct 12 ms 12160 KB Output is correct
23 Correct 12 ms 12160 KB Output is correct
24 Correct 12 ms 12160 KB Output is correct
25 Correct 11 ms 12160 KB Output is correct
26 Correct 19 ms 12288 KB Output is correct
27 Correct 15 ms 12288 KB Output is correct
28 Correct 16 ms 12416 KB Output is correct
29 Correct 16 ms 12288 KB Output is correct
30 Correct 17 ms 12288 KB Output is correct
31 Correct 12 ms 12160 KB Output is correct
32 Correct 16 ms 12544 KB Output is correct
33 Correct 12 ms 12160 KB Output is correct
34 Correct 15 ms 12416 KB Output is correct
35 Correct 16 ms 12416 KB Output is correct
36 Correct 16 ms 12288 KB Output is correct
37 Correct 16 ms 12288 KB Output is correct
38 Correct 12 ms 12160 KB Output is correct
39 Correct 16 ms 12288 KB Output is correct
40 Correct 16 ms 12288 KB Output is correct
41 Correct 16 ms 12288 KB Output is correct
42 Correct 15 ms 12416 KB Output is correct
43 Correct 15 ms 12544 KB Output is correct
44 Correct 12 ms 12160 KB Output is correct
45 Correct 16 ms 12416 KB Output is correct
46 Correct 16 ms 12288 KB Output is correct
47 Correct 12 ms 12160 KB Output is correct
48 Correct 16 ms 12288 KB Output is correct
49 Correct 15 ms 12416 KB Output is correct
50 Correct 16 ms 12416 KB Output is correct
51 Correct 16 ms 12288 KB Output is correct
52 Correct 15 ms 12288 KB Output is correct
53 Correct 15 ms 12416 KB Output is correct
54 Correct 16 ms 12416 KB Output is correct
55 Correct 12 ms 12160 KB Output is correct
56 Correct 148 ms 18032 KB Output is correct
57 Correct 191 ms 17752 KB Output is correct
58 Correct 16 ms 12288 KB Output is correct
59 Correct 12 ms 12160 KB Output is correct
60 Correct 12 ms 12160 KB Output is correct
61 Correct 184 ms 17784 KB Output is correct
62 Correct 15 ms 12288 KB Output is correct
63 Correct 211 ms 26360 KB Output is correct
64 Correct 186 ms 17656 KB Output is correct
65 Correct 16 ms 12288 KB Output is correct
66 Correct 188 ms 18684 KB Output is correct
67 Correct 15 ms 12288 KB Output is correct
68 Correct 16 ms 12288 KB Output is correct
69 Correct 145 ms 18032 KB Output is correct
70 Correct 16 ms 12544 KB Output is correct
71 Correct 187 ms 17784 KB Output is correct
72 Correct 192 ms 20472 KB Output is correct
73 Correct 12 ms 12160 KB Output is correct
74 Correct 196 ms 26616 KB Output is correct
75 Correct 192 ms 22140 KB Output is correct
76 Correct 15 ms 12288 KB Output is correct
77 Correct 15 ms 12288 KB Output is correct
78 Correct 150 ms 18032 KB Output is correct
79 Correct 165 ms 19056 KB Output is correct
80 Correct 16 ms 12288 KB Output is correct
81 Correct 15 ms 12288 KB Output is correct
82 Correct 12 ms 12160 KB Output is correct
83 Correct 12 ms 12160 KB Output is correct
84 Correct 15 ms 12288 KB Output is correct
85 Correct 227 ms 18168 KB Output is correct
86 Correct 15 ms 12288 KB Output is correct
87 Correct 204 ms 17912 KB Output is correct
88 Correct 12 ms 12160 KB Output is correct
89 Correct 192 ms 17784 KB Output is correct
90 Correct 206 ms 18168 KB Output is correct
91 Correct 211 ms 18552 KB Output is correct
92 Correct 142 ms 18036 KB Output is correct
93 Correct 15 ms 12288 KB Output is correct
94 Correct 12 ms 12160 KB Output is correct
95 Correct 173 ms 18928 KB Output is correct
96 Correct 225 ms 23416 KB Output is correct
97 Correct 16 ms 12288 KB Output is correct
98 Correct 12 ms 12160 KB Output is correct
99 Correct 164 ms 18544 KB Output is correct
100 Correct 18 ms 12368 KB Output is correct
101 Correct 218 ms 17784 KB Output is correct
102 Correct 211 ms 21744 KB Output is correct
103 Correct 16 ms 12416 KB Output is correct
104 Correct 16 ms 12416 KB Output is correct
105 Correct 17 ms 12288 KB Output is correct
106 Correct 15 ms 12288 KB Output is correct
107 Correct 16 ms 12288 KB Output is correct
108 Correct 1049 ms 53604 KB Output is correct
109 Correct 1374 ms 69564 KB Output is correct
110 Correct 1377 ms 82944 KB Output is correct
111 Correct 1532 ms 82296 KB Output is correct
112 Correct 1484 ms 70520 KB Output is correct
113 Correct 1077 ms 55652 KB Output is correct
114 Correct 1241 ms 47800 KB Output is correct
115 Correct 1234 ms 47732 KB Output is correct
116 Correct 1370 ms 50744 KB Output is correct
117 Correct 1448 ms 54392 KB Output is correct
118 Correct 1266 ms 48376 KB Output is correct
119 Correct 1461 ms 54684 KB Output is correct
120 Correct 1495 ms 74708 KB Output is correct
121 Correct 1448 ms 54520 KB Output is correct
122 Correct 1382 ms 53060 KB Output is correct
123 Correct 1098 ms 56036 KB Output is correct
124 Correct 1523 ms 53620 KB Output is correct