답안 #236814

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
236814	2020-06-03T12:48:02 Z	Knps4422	Mergers (JOI19_mergers)	C++14	100 / 100	1701 ms	141864 KB

mergers

//#pragma optimization_level 3
//#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include<bits/stdc++.h>
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/detail/standard_policies.hpp>
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update>ordset;
*/
#define fr first
#define sc second
#define vec vector
#define pb push_back
#define pii pair<int, int>
#define forn(x,y) for(int x = 1 ; x <= (int)y ; ++x)
#define all(x) (x).begin(),(x).end()
#define fast cin.tie(0);cout.tie(0);cin.sync_with_stdio(0);cout.sync_with_stdio(0);
 
using namespace std;
 
typedef long long ll;
typedef unsigned int uint;
typedef complex<int> point;
const int nmax = 500005;
const ll linf = 1e18;
const ll mod = 998244353;
const int inf = INT_MAX;
 
int n, k, tt, lvl[nmax];
vec < int > g[nmax];
int col[nmax];
int up[nmax][21];
int parent[2*nmax];
int siz[2*nmax];
int targ[nmax];
int tin[nmax],tout[nmax];
vec < int > cn[2*nmax];
int deg[2*nmax];
int find(int x){
	if(parent[x] == x)return x;
	return parent[x] = find(parent[x]);
}
void merge(int x , int y){
	x = find(x);
	y = find(y);
	if(x == y)return ;
	if(siz[x] < siz[y])swap(x,y);
	parent[y] = x;
	siz[x] += siz[y];
}
bool cmp(int x, int y){
	if(lvl[x] != lvl[y])
	return lvl[x] > lvl[y];
	return x < y;
}


void dfs(int x,int p)
{
	tin[x]=++tt;
    up[x][0]=p;
    lvl[x]=lvl[p]+1;
    for(int i=1;i<20;i++)up[x][i]=up[up[x][i-1]][i-1];
    for(int i=0;i<(int)g[x].size();i++)if(g[x][i]!=p)dfs(g[x][i],x);
	tout[x]=++tt;
}
bool anc(int x , int y){
	return tin[x] <= tin[y] && tout[x] >= tout[y];
}

int lca(int x,int y)
{
    if(anc(x,y))return x;
    if(anc(y,x))return y;
    for(int i=19;i>=0;i--)if(!anc(up[x][i],y))x=up[x][i];
    return up[x][0];
}

void rec(int nod){
	if(targ[nod] < lvl[nod]){
		merge(nod,up[nod][0]);
		targ[up[nod][0]] = min(targ[up[nod][0]],targ[nod]);
	}
}
int main(){
	cin >> n >> k;
	int a, b;
	forn(e,n-1){
		cin >> a >> b;
		g[a].pb(b);
		g[b].pb(a);
	}
	forn(i,n){
		cin >> col[i];
		cn[col[i]+n].pb(i);
		parent[i] = n + col[i];
	}
	forn(i,k){
		siz[n+i] = cn[n + i].size();
		parent[n+i] = n+i;
	}
	dfs(1,1);
	vec < int > vc;
	forn(i,n)vc.pb(i);
	sort(all(vc),cmp);
	forn(i,k){
		int t = cn[i+n][0];
		for(int j : cn[i+n]){
			t = lca(t,j);
		}
		for(int j : cn[n+i]){
			targ[j] = lvl[t];
		}
	}
	for(int i : vc)rec(i);
	forn(i,n){
		if(find(i) != find(up[i][0])){
			deg[find(i)]++;
			deg[find(up[i][0])]++;
		}
	}
	int lef = 0;
	forn(i,k){
		if(deg[i+n] == 1)lef++;
	}
	cout << (lef+1)/2 << '\n';;

}

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	35584 KB	Output is correct
2	Correct	25 ms	35584 KB	Output is correct
3	Correct	26 ms	35584 KB	Output is correct
4	Correct	25 ms	35584 KB	Output is correct
5	Correct	24 ms	35584 KB	Output is correct
6	Correct	25 ms	35712 KB	Output is correct
7	Correct	27 ms	35584 KB	Output is correct
8	Correct	25 ms	35584 KB	Output is correct
9	Correct	24 ms	35584 KB	Output is correct
10	Correct	28 ms	35584 KB	Output is correct
11	Correct	25 ms	35584 KB	Output is correct
12	Correct	25 ms	35584 KB	Output is correct
13	Correct	24 ms	35584 KB	Output is correct
14	Correct	24 ms	35584 KB	Output is correct
15	Correct	27 ms	35712 KB	Output is correct
16	Correct	25 ms	35584 KB	Output is correct
17	Correct	26 ms	35584 KB	Output is correct
18	Correct	25 ms	35584 KB	Output is correct
19	Correct	25 ms	35584 KB	Output is correct
20	Correct	25 ms	35584 KB	Output is correct
21	Correct	26 ms	35584 KB	Output is correct
22	Correct	26 ms	35584 KB	Output is correct
23	Correct	25 ms	35584 KB	Output is correct
24	Correct	25 ms	35584 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	35584 KB	Output is correct
2	Correct	25 ms	35584 KB	Output is correct
3	Correct	26 ms	35584 KB	Output is correct
4	Correct	25 ms	35584 KB	Output is correct
5	Correct	24 ms	35584 KB	Output is correct
6	Correct	25 ms	35712 KB	Output is correct
7	Correct	27 ms	35584 KB	Output is correct
8	Correct	25 ms	35584 KB	Output is correct
9	Correct	24 ms	35584 KB	Output is correct
10	Correct	28 ms	35584 KB	Output is correct
11	Correct	25 ms	35584 KB	Output is correct
12	Correct	25 ms	35584 KB	Output is correct
13	Correct	24 ms	35584 KB	Output is correct
14	Correct	24 ms	35584 KB	Output is correct
15	Correct	27 ms	35712 KB	Output is correct
16	Correct	25 ms	35584 KB	Output is correct
17	Correct	26 ms	35584 KB	Output is correct
18	Correct	25 ms	35584 KB	Output is correct
19	Correct	25 ms	35584 KB	Output is correct
20	Correct	25 ms	35584 KB	Output is correct
21	Correct	26 ms	35584 KB	Output is correct
22	Correct	26 ms	35584 KB	Output is correct
23	Correct	25 ms	35584 KB	Output is correct
24	Correct	25 ms	35584 KB	Output is correct
25	Correct	27 ms	35712 KB	Output is correct
26	Correct	29 ms	36096 KB	Output is correct
27	Correct	30 ms	36224 KB	Output is correct
28	Correct	30 ms	36224 KB	Output is correct
29	Correct	29 ms	36224 KB	Output is correct
30	Correct	29 ms	36096 KB	Output is correct
31	Correct	25 ms	35584 KB	Output is correct
32	Correct	29 ms	36352 KB	Output is correct
33	Correct	25 ms	35712 KB	Output is correct
34	Correct	30 ms	36096 KB	Output is correct
35	Correct	29 ms	36224 KB	Output is correct
36	Correct	29 ms	36096 KB	Output is correct
37	Correct	30 ms	36096 KB	Output is correct
38	Correct	25 ms	35584 KB	Output is correct
39	Correct	30 ms	36096 KB	Output is correct
40	Correct	29 ms	36096 KB	Output is correct
41	Correct	29 ms	36096 KB	Output is correct
42	Correct	31 ms	36096 KB	Output is correct
43	Correct	30 ms	36224 KB	Output is correct
44	Correct	25 ms	35584 KB	Output is correct
45	Correct	29 ms	36224 KB	Output is correct
46	Correct	31 ms	36096 KB	Output is correct
47	Correct	25 ms	35584 KB	Output is correct
48	Correct	29 ms	36096 KB	Output is correct
49	Correct	29 ms	36224 KB	Output is correct
50	Correct	29 ms	36224 KB	Output is correct
51	Correct	29 ms	36096 KB	Output is correct
52	Correct	29 ms	36096 KB	Output is correct
53	Correct	29 ms	36096 KB	Output is correct
54	Correct	29 ms	36144 KB	Output is correct

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	35584 KB	Output is correct
2	Correct	25 ms	35584 KB	Output is correct
3	Correct	26 ms	35584 KB	Output is correct
4	Correct	25 ms	35584 KB	Output is correct
5	Correct	24 ms	35584 KB	Output is correct
6	Correct	25 ms	35712 KB	Output is correct
7	Correct	27 ms	35584 KB	Output is correct
8	Correct	25 ms	35584 KB	Output is correct
9	Correct	24 ms	35584 KB	Output is correct
10	Correct	28 ms	35584 KB	Output is correct
11	Correct	25 ms	35584 KB	Output is correct
12	Correct	25 ms	35584 KB	Output is correct
13	Correct	24 ms	35584 KB	Output is correct
14	Correct	24 ms	35584 KB	Output is correct
15	Correct	27 ms	35712 KB	Output is correct
16	Correct	25 ms	35584 KB	Output is correct
17	Correct	26 ms	35584 KB	Output is correct
18	Correct	25 ms	35584 KB	Output is correct
19	Correct	25 ms	35584 KB	Output is correct
20	Correct	25 ms	35584 KB	Output is correct
21	Correct	26 ms	35584 KB	Output is correct
22	Correct	26 ms	35584 KB	Output is correct
23	Correct	25 ms	35584 KB	Output is correct
24	Correct	25 ms	35584 KB	Output is correct
25	Correct	26 ms	35584 KB	Output is correct
26	Correct	182 ms	50948 KB	Output is correct
27	Correct	223 ms	50416 KB	Output is correct
28	Correct	29 ms	36096 KB	Output is correct
29	Correct	25 ms	35584 KB	Output is correct
30	Correct	25 ms	35584 KB	Output is correct
31	Correct	224 ms	50504 KB	Output is correct
32	Correct	28 ms	36088 KB	Output is correct
33	Correct	240 ms	54644 KB	Output is correct
34	Correct	222 ms	50708 KB	Output is correct
35	Correct	29 ms	36096 KB	Output is correct
36	Correct	235 ms	50684 KB	Output is correct
37	Correct	29 ms	36084 KB	Output is correct
38	Correct	29 ms	36096 KB	Output is correct
39	Correct	185 ms	50684 KB	Output is correct
40	Correct	29 ms	36224 KB	Output is correct
41	Correct	219 ms	50284 KB	Output is correct
42	Correct	233 ms	51804 KB	Output is correct
43	Correct	25 ms	35584 KB	Output is correct
44	Correct	240 ms	54772 KB	Output is correct
45	Correct	252 ms	52740 KB	Output is correct
46	Correct	29 ms	36096 KB	Output is correct
47	Correct	31 ms	36096 KB	Output is correct

Subtask #4
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	177 ms	50816 KB	Output is correct
2	Correct	223 ms	54488 KB	Output is correct
3	Correct	29 ms	36224 KB	Output is correct
4	Correct	29 ms	36096 KB	Output is correct
5	Correct	27 ms	35584 KB	Output is correct
6	Correct	25 ms	35584 KB	Output is correct
7	Correct	29 ms	36096 KB	Output is correct
8	Correct	265 ms	52080 KB	Output is correct
9	Correct	31 ms	36224 KB	Output is correct
10	Correct	239 ms	50552 KB	Output is correct
11	Correct	25 ms	35584 KB	Output is correct
12	Correct	235 ms	50416 KB	Output is correct
13	Correct	255 ms	52084 KB	Output is correct
14	Correct	243 ms	54256 KB	Output is correct
15	Correct	179 ms	50688 KB	Output is correct
16	Correct	29 ms	36096 KB	Output is correct
17	Correct	27 ms	35712 KB	Output is correct
18	Correct	211 ms	54252 KB	Output is correct
19	Correct	274 ms	56688 KB	Output is correct
20	Correct	29 ms	36224 KB	Output is correct
21	Correct	27 ms	35584 KB	Output is correct
22	Correct	229 ms	52452 KB	Output is correct
23	Correct	29 ms	36096 KB	Output is correct
24	Correct	235 ms	50928 KB	Output is correct
25	Correct	258 ms	55792 KB	Output is correct
26	Correct	29 ms	36224 KB	Output is correct
27	Correct	30 ms	36224 KB	Output is correct
28	Correct	29 ms	36088 KB	Output is correct
29	Correct	29 ms	36096 KB	Output is correct
30	Correct	29 ms	36224 KB	Output is correct

Subtask #5
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	35584 KB	Output is correct
2	Correct	25 ms	35584 KB	Output is correct
3	Correct	26 ms	35584 KB	Output is correct
4	Correct	25 ms	35584 KB	Output is correct
5	Correct	24 ms	35584 KB	Output is correct
6	Correct	25 ms	35712 KB	Output is correct
7	Correct	27 ms	35584 KB	Output is correct
8	Correct	25 ms	35584 KB	Output is correct
9	Correct	24 ms	35584 KB	Output is correct
10	Correct	28 ms	35584 KB	Output is correct
11	Correct	25 ms	35584 KB	Output is correct
12	Correct	25 ms	35584 KB	Output is correct
13	Correct	24 ms	35584 KB	Output is correct
14	Correct	24 ms	35584 KB	Output is correct
15	Correct	27 ms	35712 KB	Output is correct
16	Correct	25 ms	35584 KB	Output is correct
17	Correct	26 ms	35584 KB	Output is correct
18	Correct	25 ms	35584 KB	Output is correct
19	Correct	25 ms	35584 KB	Output is correct
20	Correct	25 ms	35584 KB	Output is correct
21	Correct	26 ms	35584 KB	Output is correct
22	Correct	26 ms	35584 KB	Output is correct
23	Correct	25 ms	35584 KB	Output is correct
24	Correct	25 ms	35584 KB	Output is correct
25	Correct	27 ms	35712 KB	Output is correct
26	Correct	29 ms	36096 KB	Output is correct
27	Correct	30 ms	36224 KB	Output is correct
28	Correct	30 ms	36224 KB	Output is correct
29	Correct	29 ms	36224 KB	Output is correct
30	Correct	29 ms	36096 KB	Output is correct
31	Correct	25 ms	35584 KB	Output is correct
32	Correct	29 ms	36352 KB	Output is correct
33	Correct	25 ms	35712 KB	Output is correct
34	Correct	30 ms	36096 KB	Output is correct
35	Correct	29 ms	36224 KB	Output is correct
36	Correct	29 ms	36096 KB	Output is correct
37	Correct	30 ms	36096 KB	Output is correct
38	Correct	25 ms	35584 KB	Output is correct
39	Correct	30 ms	36096 KB	Output is correct
40	Correct	29 ms	36096 KB	Output is correct
41	Correct	29 ms	36096 KB	Output is correct
42	Correct	31 ms	36096 KB	Output is correct
43	Correct	30 ms	36224 KB	Output is correct
44	Correct	25 ms	35584 KB	Output is correct
45	Correct	29 ms	36224 KB	Output is correct
46	Correct	31 ms	36096 KB	Output is correct
47	Correct	25 ms	35584 KB	Output is correct
48	Correct	29 ms	36096 KB	Output is correct
49	Correct	29 ms	36224 KB	Output is correct
50	Correct	29 ms	36224 KB	Output is correct
51	Correct	29 ms	36096 KB	Output is correct
52	Correct	29 ms	36096 KB	Output is correct
53	Correct	29 ms	36096 KB	Output is correct
54	Correct	29 ms	36144 KB	Output is correct
55	Correct	26 ms	35584 KB	Output is correct
56	Correct	182 ms	50948 KB	Output is correct
57	Correct	223 ms	50416 KB	Output is correct
58	Correct	29 ms	36096 KB	Output is correct
59	Correct	25 ms	35584 KB	Output is correct
60	Correct	25 ms	35584 KB	Output is correct
61	Correct	224 ms	50504 KB	Output is correct
62	Correct	28 ms	36088 KB	Output is correct
63	Correct	240 ms	54644 KB	Output is correct
64	Correct	222 ms	50708 KB	Output is correct
65	Correct	29 ms	36096 KB	Output is correct
66	Correct	235 ms	50684 KB	Output is correct
67	Correct	29 ms	36084 KB	Output is correct
68	Correct	29 ms	36096 KB	Output is correct
69	Correct	185 ms	50684 KB	Output is correct
70	Correct	29 ms	36224 KB	Output is correct
71	Correct	219 ms	50284 KB	Output is correct
72	Correct	233 ms	51804 KB	Output is correct
73	Correct	25 ms	35584 KB	Output is correct
74	Correct	240 ms	54772 KB	Output is correct
75	Correct	252 ms	52740 KB	Output is correct
76	Correct	29 ms	36096 KB	Output is correct
77	Correct	31 ms	36096 KB	Output is correct
78	Correct	177 ms	50816 KB	Output is correct
79	Correct	223 ms	54488 KB	Output is correct
80	Correct	29 ms	36224 KB	Output is correct
81	Correct	29 ms	36096 KB	Output is correct
82	Correct	27 ms	35584 KB	Output is correct
83	Correct	25 ms	35584 KB	Output is correct
84	Correct	29 ms	36096 KB	Output is correct
85	Correct	265 ms	52080 KB	Output is correct
86	Correct	31 ms	36224 KB	Output is correct
87	Correct	239 ms	50552 KB	Output is correct
88	Correct	25 ms	35584 KB	Output is correct
89	Correct	235 ms	50416 KB	Output is correct
90	Correct	255 ms	52084 KB	Output is correct
91	Correct	243 ms	54256 KB	Output is correct
92	Correct	179 ms	50688 KB	Output is correct
93	Correct	29 ms	36096 KB	Output is correct
94	Correct	27 ms	35712 KB	Output is correct
95	Correct	211 ms	54252 KB	Output is correct
96	Correct	274 ms	56688 KB	Output is correct
97	Correct	29 ms	36224 KB	Output is correct
98	Correct	27 ms	35584 KB	Output is correct
99	Correct	229 ms	52452 KB	Output is correct
100	Correct	29 ms	36096 KB	Output is correct
101	Correct	235 ms	50928 KB	Output is correct
102	Correct	258 ms	55792 KB	Output is correct
103	Correct	29 ms	36224 KB	Output is correct
104	Correct	30 ms	36224 KB	Output is correct
105	Correct	29 ms	36088 KB	Output is correct
106	Correct	29 ms	36096 KB	Output is correct
107	Correct	29 ms	36224 KB	Output is correct
108	Correct	1223 ms	117212 KB	Output is correct
109	Correct	1419 ms	119272 KB	Output is correct
110	Correct	1361 ms	126048 KB	Output is correct
111	Correct	1635 ms	141864 KB	Output is correct
112	Correct	1701 ms	136136 KB	Output is correct
113	Correct	1264 ms	127568 KB	Output is correct
114	Correct	1186 ms	108768 KB	Output is correct
115	Correct	1198 ms	108900 KB	Output is correct
116	Correct	1454 ms	112816 KB	Output is correct
117	Correct	1474 ms	128496 KB	Output is correct
118	Correct	1338 ms	108620 KB	Output is correct
119	Correct	1451 ms	128232 KB	Output is correct
120	Correct	1628 ms	136672 KB	Output is correct
121	Correct	1456 ms	128328 KB	Output is correct
122	Correct	1518 ms	119756 KB	Output is correct
123	Correct	1270 ms	129728 KB	Output is correct
124	Correct	1581 ms	126060 KB	Output is correct

답안 #236814

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 24.0 / 24.0

Subtask #3 14.0 / 14.0

Subtask #4 22.0 / 22.0

Subtask #5 30.0 / 30.0

Subtask #1
10.0 / 10.0

Subtask #2
24.0 / 24.0

Subtask #3
14.0 / 14.0

Subtask #4
22.0 / 22.0

Subtask #5
30.0 / 30.0