답안 #64803 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
64803	2018-08-05T17:23:44 Z	kjp4155	족보 (KOI18_family)	C++17	100 / 100	1093 ms	65352 KB

family

#include <stdio.h>
#include <algorithm>
#include <utility>
#include <vector>
using namespace std;

typedef pair<int,int> Pi;

/* Union Find 자료구조 */
int pa[300500], cnt[300500]; 
int find(int x){
	if( pa[x] == x ) return x;
	return pa[x] = find(pa[x]);
}
void uni(int a, int b){
	a = find(a); b = find(b);
	if( a == b ) return;
	pa[a] = b;
	cnt[b] += cnt[a];
}

struct event{
	int t, len, level, node;
	// Smaller event first. Deeper event first. 
	bool operator < (event e){
		if( len != e.len ) return len < e.len;
		return level > e.level;
	}
};

int N[2],K;
vector<int> E[2][300500];
int root[2];
int sz[2][300500], leaf[2][300500], level[2][300500];
int timer = 0;


// dfs를 돌면서 각 내부정점의 부트리에 속하는 아무 리프노드 하나와 총 리프개수를 저장
// 또한, 각 정점의 깊이도 같이 저장
// dfs함수의 리턴값은 (아무 리프노드, 리프노드 개수) 이다.
Pi dfs(int t, int x, int l){
	level[t][x] = l;

	if( 1 <= x && x <= K ){
		timer++;
		leaf[t][x] = x;
		sz[t][x] = 1;
		return {x,1};
	}
	
	for(auto e : E[t][x]){
		Pi res = dfs(t, e, l+1);
		leaf[t][x] = res.first;
		sz[t][x] += res.second; 
	}
	
	return {leaf[t][x], sz[t][x]};
}

int main(){
	scanf("%d%d%d",&N[0],&N[1],&K);

	// Union Find 초기화
	for(int i=1;i<=K;i++){
		pa[i] = i; cnt[i] = 1;
	}

	// 트리 그래프 만들기
	for(int t=0;t<2;t++){
		for(int i=1;i<=N[t];i++){
			int x; scanf("%d",&x);
			if( x == 0 ) root[t] = i;
			else E[t][x].push_back(i);
		}
	}

	// dfs를 돌면서 각 내부정점의 부트리에 속하는 아무 리프노드 하나와 총 리프개수를 저장
	// 또한, 각 정점의 깊이도 같이 저장
	dfs( 0, root[0] , 0);
	timer = 0;
	dfs( 1, root[1] , 0);

	// 모든 내부정점에 대해 event 만들어 주기
	vector<event> events;
	for(int t=0;t<2;t++){
		for(int i=K+1;i<=N[t];i++){
			events.push_back({t, sz[t][i], level[t][i], i});
		}
	}

	// event들을 (길이,level)순으로 정렬
	sort(events.begin(), events.end());

	// 각 event를 정렬된 순서대로 보면서, 현재 정점의 부 트리에 속한 모든 리프노드를
	// Union 해준다. 이후 현재 정점의 부 트리에 속한 리프노트 개수와 union된 집합의 크기를 비교한다.
	for(auto e : events){
		for(auto x : E[e.t][e.node]){
			uni(leaf[e.t][e.node], leaf[e.t][x]);
		}
		if( cnt[find(leaf[e.t][e.node])] != e.len ){
			printf("NO\n");
			return 0;
		}
	}

	printf("YES\n");
}

Compilation message

family.cpp: In function 'int main()':
family.cpp:61:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d",&N[0],&N[1],&K);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
family.cpp:71:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    int x; scanf("%d",&x);
           ~~~~~^~~~~~~~~

Subtask #1
17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	14 ms	14456 KB	Output is correct
2	Correct	14 ms	14456 KB	Output is correct
3	Correct	13 ms	14608 KB	Output is correct
4	Correct	14 ms	14684 KB	Output is correct
5	Correct	14 ms	14684 KB	Output is correct
6	Correct	18 ms	14708 KB	Output is correct
7	Correct	24 ms	14708 KB	Output is correct
8	Correct	19 ms	14708 KB	Output is correct
9	Correct	19 ms	14708 KB	Output is correct
10	Correct	17 ms	14708 KB	Output is correct
11	Correct	17 ms	14736 KB	Output is correct
12	Correct	20 ms	14736 KB	Output is correct
13	Correct	19 ms	14804 KB	Output is correct
14	Correct	16 ms	14804 KB	Output is correct
15	Correct	18 ms	14804 KB	Output is correct
16	Correct	17 ms	14804 KB	Output is correct
17	Correct	21 ms	14804 KB	Output is correct
18	Correct	19 ms	14804 KB	Output is correct
19	Correct	19 ms	14804 KB	Output is correct
20	Correct	19 ms	14804 KB	Output is correct
21	Correct	18 ms	14804 KB	Output is correct
22	Correct	18 ms	14804 KB	Output is correct
23	Correct	18 ms	14804 KB	Output is correct
24	Correct	18 ms	14804 KB	Output is correct
25	Correct	18 ms	14804 KB	Output is correct
26	Correct	18 ms	14804 KB	Output is correct
27	Correct	17 ms	14804 KB	Output is correct
28	Correct	19 ms	14804 KB	Output is correct
29	Correct	18 ms	14804 KB	Output is correct
30	Correct	18 ms	14804 KB	Output is correct

Subtask #2
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	14 ms	14456 KB	Output is correct
2	Correct	14 ms	14456 KB	Output is correct
3	Correct	13 ms	14608 KB	Output is correct
4	Correct	14 ms	14684 KB	Output is correct
5	Correct	14 ms	14684 KB	Output is correct
6	Correct	18 ms	14708 KB	Output is correct
7	Correct	24 ms	14708 KB	Output is correct
8	Correct	19 ms	14708 KB	Output is correct
9	Correct	19 ms	14708 KB	Output is correct
10	Correct	17 ms	14708 KB	Output is correct
11	Correct	17 ms	14736 KB	Output is correct
12	Correct	20 ms	14736 KB	Output is correct
13	Correct	19 ms	14804 KB	Output is correct
14	Correct	16 ms	14804 KB	Output is correct
15	Correct	18 ms	14804 KB	Output is correct
16	Correct	17 ms	14804 KB	Output is correct
17	Correct	21 ms	14804 KB	Output is correct
18	Correct	19 ms	14804 KB	Output is correct
19	Correct	19 ms	14804 KB	Output is correct
20	Correct	19 ms	14804 KB	Output is correct
21	Correct	18 ms	14804 KB	Output is correct
22	Correct	18 ms	14804 KB	Output is correct
23	Correct	18 ms	14804 KB	Output is correct
24	Correct	18 ms	14804 KB	Output is correct
25	Correct	18 ms	14804 KB	Output is correct
26	Correct	18 ms	14804 KB	Output is correct
27	Correct	17 ms	14804 KB	Output is correct
28	Correct	19 ms	14804 KB	Output is correct
29	Correct	18 ms	14804 KB	Output is correct
30	Correct	18 ms	14804 KB	Output is correct
31	Correct	19 ms	14804 KB	Output is correct
32	Correct	17 ms	14804 KB	Output is correct
33	Correct	18 ms	14804 KB	Output is correct
34	Correct	19 ms	14804 KB	Output is correct
35	Correct	16 ms	14804 KB	Output is correct
36	Correct	18 ms	14804 KB	Output is correct
37	Correct	22 ms	14804 KB	Output is correct
38	Correct	16 ms	14804 KB	Output is correct
39	Correct	19 ms	14804 KB	Output is correct
40	Correct	19 ms	14804 KB	Output is correct
41	Correct	17 ms	14804 KB	Output is correct
42	Correct	17 ms	14804 KB	Output is correct
43	Correct	17 ms	14804 KB	Output is correct
44	Correct	18 ms	14804 KB	Output is correct
45	Correct	18 ms	14804 KB	Output is correct
46	Correct	19 ms	14804 KB	Output is correct
47	Correct	18 ms	14804 KB	Output is correct
48	Correct	20 ms	14804 KB	Output is correct
49	Correct	19 ms	14804 KB	Output is correct
50	Correct	20 ms	14804 KB	Output is correct

Subtask #3
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	14 ms	14456 KB	Output is correct
2	Correct	14 ms	14456 KB	Output is correct
3	Correct	13 ms	14608 KB	Output is correct
4	Correct	14 ms	14684 KB	Output is correct
5	Correct	14 ms	14684 KB	Output is correct
6	Correct	18 ms	14708 KB	Output is correct
7	Correct	24 ms	14708 KB	Output is correct
8	Correct	19 ms	14708 KB	Output is correct
9	Correct	19 ms	14708 KB	Output is correct
10	Correct	17 ms	14708 KB	Output is correct
11	Correct	17 ms	14736 KB	Output is correct
12	Correct	20 ms	14736 KB	Output is correct
13	Correct	19 ms	14804 KB	Output is correct
14	Correct	16 ms	14804 KB	Output is correct
15	Correct	18 ms	14804 KB	Output is correct
16	Correct	17 ms	14804 KB	Output is correct
17	Correct	21 ms	14804 KB	Output is correct
18	Correct	19 ms	14804 KB	Output is correct
19	Correct	19 ms	14804 KB	Output is correct
20	Correct	19 ms	14804 KB	Output is correct
21	Correct	18 ms	14804 KB	Output is correct
22	Correct	18 ms	14804 KB	Output is correct
23	Correct	18 ms	14804 KB	Output is correct
24	Correct	18 ms	14804 KB	Output is correct
25	Correct	18 ms	14804 KB	Output is correct
26	Correct	18 ms	14804 KB	Output is correct
27	Correct	17 ms	14804 KB	Output is correct
28	Correct	19 ms	14804 KB	Output is correct
29	Correct	18 ms	14804 KB	Output is correct
30	Correct	18 ms	14804 KB	Output is correct
31	Correct	19 ms	14804 KB	Output is correct
32	Correct	17 ms	14804 KB	Output is correct
33	Correct	18 ms	14804 KB	Output is correct
34	Correct	19 ms	14804 KB	Output is correct
35	Correct	16 ms	14804 KB	Output is correct
36	Correct	18 ms	14804 KB	Output is correct
37	Correct	22 ms	14804 KB	Output is correct
38	Correct	16 ms	14804 KB	Output is correct
39	Correct	19 ms	14804 KB	Output is correct
40	Correct	19 ms	14804 KB	Output is correct
41	Correct	17 ms	14804 KB	Output is correct
42	Correct	17 ms	14804 KB	Output is correct
43	Correct	17 ms	14804 KB	Output is correct
44	Correct	18 ms	14804 KB	Output is correct
45	Correct	18 ms	14804 KB	Output is correct
46	Correct	19 ms	14804 KB	Output is correct
47	Correct	18 ms	14804 KB	Output is correct
48	Correct	20 ms	14804 KB	Output is correct
49	Correct	19 ms	14804 KB	Output is correct
50	Correct	20 ms	14804 KB	Output is correct
51	Correct	25 ms	14956 KB	Output is correct
52	Correct	21 ms	14992 KB	Output is correct
53	Correct	26 ms	15212 KB	Output is correct
54	Correct	19 ms	15212 KB	Output is correct
55	Correct	29 ms	15212 KB	Output is correct
56	Correct	21 ms	15212 KB	Output is correct
57	Correct	22 ms	15212 KB	Output is correct
58	Correct	25 ms	15212 KB	Output is correct
59	Correct	22 ms	15212 KB	Output is correct
60	Correct	21 ms	15212 KB	Output is correct
61	Correct	23 ms	15340 KB	Output is correct
62	Correct	23 ms	15340 KB	Output is correct
63	Correct	24 ms	15340 KB	Output is correct
64	Correct	22 ms	15340 KB	Output is correct
65	Correct	22 ms	15340 KB	Output is correct
66	Correct	21 ms	15340 KB	Output is correct
67	Correct	24 ms	15340 KB	Output is correct
68	Correct	21 ms	15340 KB	Output is correct
69	Correct	25 ms	15340 KB	Output is correct
70	Correct	22 ms	15340 KB	Output is correct

Subtask #4
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	14 ms	14456 KB	Output is correct
2	Correct	14 ms	14456 KB	Output is correct
3	Correct	13 ms	14608 KB	Output is correct
4	Correct	14 ms	14684 KB	Output is correct
5	Correct	14 ms	14684 KB	Output is correct
6	Correct	18 ms	14708 KB	Output is correct
7	Correct	24 ms	14708 KB	Output is correct
8	Correct	19 ms	14708 KB	Output is correct
9	Correct	19 ms	14708 KB	Output is correct
10	Correct	17 ms	14708 KB	Output is correct
11	Correct	17 ms	14736 KB	Output is correct
12	Correct	20 ms	14736 KB	Output is correct
13	Correct	19 ms	14804 KB	Output is correct
14	Correct	16 ms	14804 KB	Output is correct
15	Correct	18 ms	14804 KB	Output is correct
16	Correct	17 ms	14804 KB	Output is correct
17	Correct	21 ms	14804 KB	Output is correct
18	Correct	19 ms	14804 KB	Output is correct
19	Correct	19 ms	14804 KB	Output is correct
20	Correct	19 ms	14804 KB	Output is correct
21	Correct	18 ms	14804 KB	Output is correct
22	Correct	18 ms	14804 KB	Output is correct
23	Correct	18 ms	14804 KB	Output is correct
24	Correct	18 ms	14804 KB	Output is correct
25	Correct	18 ms	14804 KB	Output is correct
26	Correct	18 ms	14804 KB	Output is correct
27	Correct	17 ms	14804 KB	Output is correct
28	Correct	19 ms	14804 KB	Output is correct
29	Correct	18 ms	14804 KB	Output is correct
30	Correct	18 ms	14804 KB	Output is correct
31	Correct	19 ms	14804 KB	Output is correct
32	Correct	17 ms	14804 KB	Output is correct
33	Correct	18 ms	14804 KB	Output is correct
34	Correct	19 ms	14804 KB	Output is correct
35	Correct	16 ms	14804 KB	Output is correct
36	Correct	18 ms	14804 KB	Output is correct
37	Correct	22 ms	14804 KB	Output is correct
38	Correct	16 ms	14804 KB	Output is correct
39	Correct	19 ms	14804 KB	Output is correct
40	Correct	19 ms	14804 KB	Output is correct
41	Correct	17 ms	14804 KB	Output is correct
42	Correct	17 ms	14804 KB	Output is correct
43	Correct	17 ms	14804 KB	Output is correct
44	Correct	18 ms	14804 KB	Output is correct
45	Correct	18 ms	14804 KB	Output is correct
46	Correct	19 ms	14804 KB	Output is correct
47	Correct	18 ms	14804 KB	Output is correct
48	Correct	20 ms	14804 KB	Output is correct
49	Correct	19 ms	14804 KB	Output is correct
50	Correct	20 ms	14804 KB	Output is correct
51	Correct	25 ms	14956 KB	Output is correct
52	Correct	21 ms	14992 KB	Output is correct
53	Correct	26 ms	15212 KB	Output is correct
54	Correct	19 ms	15212 KB	Output is correct
55	Correct	29 ms	15212 KB	Output is correct
56	Correct	21 ms	15212 KB	Output is correct
57	Correct	22 ms	15212 KB	Output is correct
58	Correct	25 ms	15212 KB	Output is correct
59	Correct	22 ms	15212 KB	Output is correct
60	Correct	21 ms	15212 KB	Output is correct
61	Correct	23 ms	15340 KB	Output is correct
62	Correct	23 ms	15340 KB	Output is correct
63	Correct	24 ms	15340 KB	Output is correct
64	Correct	22 ms	15340 KB	Output is correct
65	Correct	22 ms	15340 KB	Output is correct
66	Correct	21 ms	15340 KB	Output is correct
67	Correct	24 ms	15340 KB	Output is correct
68	Correct	21 ms	15340 KB	Output is correct
69	Correct	25 ms	15340 KB	Output is correct
70	Correct	22 ms	15340 KB	Output is correct
71	Correct	101 ms	20192 KB	Output is correct
72	Correct	113 ms	20192 KB	Output is correct
73	Correct	82 ms	20192 KB	Output is correct
74	Correct	141 ms	22296 KB	Output is correct
75	Correct	123 ms	22296 KB	Output is correct
76	Correct	872 ms	65352 KB	Output is correct
77	Correct	1093 ms	65352 KB	Output is correct
78	Correct	612 ms	65352 KB	Output is correct
79	Correct	771 ms	65352 KB	Output is correct
80	Correct	833 ms	65352 KB	Output is correct
81	Correct	97 ms	65352 KB	Output is correct
82	Correct	84 ms	65352 KB	Output is correct
83	Correct	66 ms	65352 KB	Output is correct
84	Correct	119 ms	65352 KB	Output is correct
85	Correct	121 ms	65352 KB	Output is correct
86	Correct	563 ms	65352 KB	Output is correct
87	Correct	622 ms	65352 KB	Output is correct
88	Correct	529 ms	65352 KB	Output is correct
89	Correct	657 ms	65352 KB	Output is correct
90	Correct	629 ms	65352 KB	Output is correct

답안 #64803

Compilation message

Subtask #1 17.0 / 17.0

Subtask #2 27.0 / 27.0

Subtask #3 15.0 / 15.0

Subtask #4 41.0 / 41.0

Subtask #1
17.0 / 17.0

Subtask #2
27.0 / 27.0

Subtask #3
15.0 / 15.0

Subtask #4
41.0 / 41.0