oj.uz

답안 #223312

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
223312 2020-04-15T07:08:37 Z _7_7_ Mergers (JOI19_mergers) C++14
46 / 100
 230 ms 28024 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;
	assert(n != 3000 || k != 200);
	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

# 결과 실행 시간 메모리 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 13 ms 12136 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 14 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 13 ms 12160 KB Output is correct
11 Correct 12 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 12032 KB Output is correct
18 Correct 13 ms 12160 KB Output is correct
19 Correct 12 ms 12160 KB Output is correct
20 Correct 12 ms 12160 KB Output is correct
21 Correct 12 ms 12160 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
0 / 24.0

# 결과 실행 시간 메모리 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 13 ms 12136 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 14 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 13 ms 12160 KB Output is correct
11 Correct 12 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 12032 KB Output is correct
18 Correct 13 ms 12160 KB Output is correct
19 Correct 12 ms 12160 KB Output is correct
20 Correct 12 ms 12160 KB Output is correct
21 Correct 12 ms 12160 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 16 ms 12288 KB Output is correct
27 Correct 16 ms 12416 KB Output is correct
28 Correct 16 ms 12416 KB Output is correct
29 Correct 16 ms 12416 KB Output is correct
30 Runtime error 25 ms 24320 KB Execution killed with signal 11 (could be triggered by violating memory limits)
31 Halted 0 ms 0 KB -

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 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 13 ms 12136 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 14 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 13 ms 12160 KB Output is correct
11 Correct 12 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 12032 KB Output is correct
18 Correct 13 ms 12160 KB Output is correct
19 Correct 12 ms 12160 KB Output is correct
20 Correct 12 ms 12160 KB Output is correct
21 Correct 12 ms 12160 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 12288 KB Output is correct
26 Correct 153 ms 19436 KB Output is correct
27 Correct 200 ms 19192 KB Output is correct
28 Correct 15 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 195 ms 19192 KB Output is correct
32 Correct 15 ms 12288 KB Output is correct
33 Correct 209 ms 27768 KB Output is correct
34 Correct 194 ms 19192 KB Output is correct
35 Correct 16 ms 12416 KB Output is correct
36 Correct 188 ms 20088 KB Output is correct
37 Correct 16 ms 12288 KB Output is correct
38 Correct 16 ms 12288 KB Output is correct
39 Correct 146 ms 19436 KB Output is correct
40 Correct 15 ms 12544 KB Output is correct
41 Correct 178 ms 19064 KB Output is correct
42 Correct 193 ms 22008 KB Output is correct
43 Correct 12 ms 12160 KB Output is correct
44 Correct 216 ms 28024 KB Output is correct
45 Correct 194 ms 23544 KB Output is correct
46 Correct 15 ms 12288 KB Output is correct
47 Correct 16 ms 12416 KB Output is correct

Subtask #4
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 148 ms 19440 KB Output is correct
2 Correct 168 ms 20588 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 12392 KB Output is correct
8 Correct 217 ms 20064 KB Output is correct
9 Correct 16 ms 12416 KB Output is correct
10 Correct 194 ms 19320 KB Output is correct
11 Correct 12 ms 12160 KB Output is correct
12 Correct 198 ms 19448 KB Output is correct
13 Correct 230 ms 19868 KB Output is correct
14 Correct 230 ms 20336 KB Output is correct
15 Correct 147 ms 19440 KB Output is correct
16 Correct 15 ms 12416 KB Output is correct
17 Correct 12 ms 12160 KB Output is correct
18 Correct 168 ms 20592 KB Output is correct
19 Correct 223 ms 25084 KB Output is correct
20 Correct 15 ms 12288 KB Output is correct
21 Correct 12 ms 12160 KB Output is correct
22 Correct 159 ms 20080 KB Output is correct
23 Correct 16 ms 12288 KB Output is correct
24 Correct 213 ms 19448 KB Output is correct
25 Correct 224 ms 23556 KB Output is correct
26 Correct 15 ms 12416 KB Output is correct
27 Correct 16 ms 12416 KB Output is correct
28 Correct 16 ms 12416 KB Output is correct
29 Correct 15 ms 12416 KB Output is correct
30 Correct 16 ms 12416 KB Output is correct

Subtask #5
0 / 30.0

# 결과 실행 시간 메모리 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 13 ms 12136 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 14 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 13 ms 12160 KB Output is correct
11 Correct 12 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 12032 KB Output is correct
18 Correct 13 ms 12160 KB Output is correct
19 Correct 12 ms 12160 KB Output is correct
20 Correct 12 ms 12160 KB Output is correct
21 Correct 12 ms 12160 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 16 ms 12288 KB Output is correct
27 Correct 16 ms 12416 KB Output is correct
28 Correct 16 ms 12416 KB Output is correct
29 Correct 16 ms 12416 KB Output is correct
30 Runtime error 25 ms 24320 KB Execution killed with signal 11 (could be triggered by violating memory limits)
31 Halted 0 ms 0 KB -