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답안 #1045451

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1045451 2024-08-06T01:15:17 Z RauPro Mergers (JOI19_mergers) PyPy 3
34 / 100
 570 ms 262144 KB 
import sys
from collections import defaultdict
from sys import setrecursionlimit, stdin, stdout

setrecursionlimit(1000000)
class DSU:
    def __init__(self, n):
        self.parent = list(range(n))

    def find(self, a):
        acopy = a
        while a != self.parent[a]:
            a = self.parent[a]
        while acopy != a:
            self.parent[acopy], acopy = a, self.parent[acopy]
        return a

    def merge(self, a, b):
        self.parent[self.find(b)] = self.find(a)


def setup(v, parent):
    for p in graf[v]:
        if p == parent:
            continue
        depth[p] = depth[v] + 1
        up[p] = v
        setup(p, v)


def merge(a, b):
    a = dsu.find(a)
    b = dsu.find(b)
    while a != b:
        if depth[a] < depth[b]:
            a, b = b, a
        dsu.merge(up[a], a)
        a = dsu.find(up[a])



n, k = map(int, input().split())

graf = defaultdict(list)
dsu = DSU(n)
up = [0] * n
depth = [0] * n

for _ in range(n - 1):
    a, b = map(int, input().split())
    a-=1
    b-=1
    graf[a].append(b)
    graf[b].append(a)

setup(0, -1)

groups = defaultdict(list)
for i in range(n):
    a = int(input()) - 1
    groups[a].append(i)

for group in groups.values():
    for j in range(1, len(group)):
        merge(group[0], group[j])

sol = 0
deg = [0] * n
for i in range(n):
    for p in graf[i]:
        if dsu.find(i) != dsu.find(p):
            if deg[dsu.find(i)] == 0:
                sol += 1
            if deg[dsu.find(i)] == 1:
                sol -= 1
            deg[dsu.find(i)] += 1

print((sol + 1) // 2)

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 18740 KB Output is correct
2 Correct 33 ms 18748 KB Output is correct
3 Correct 31 ms 18748 KB Output is correct
4 Correct 28 ms 18812 KB Output is correct
5 Correct 31 ms 18748 KB Output is correct
6 Correct 31 ms 18740 KB Output is correct
7 Correct 28 ms 18748 KB Output is correct
8 Correct 30 ms 18816 KB Output is correct
9 Correct 27 ms 18740 KB Output is correct
10 Correct 31 ms 18740 KB Output is correct
11 Correct 32 ms 18748 KB Output is correct
12 Correct 30 ms 18748 KB Output is correct
13 Correct 28 ms 18684 KB Output is correct
14 Correct 31 ms 18680 KB Output is correct
15 Correct 36 ms 18748 KB Output is correct
16 Correct 26 ms 18560 KB Output is correct
17 Correct 35 ms 18788 KB Output is correct
18 Correct 36 ms 18732 KB Output is correct
19 Correct 31 ms 18748 KB Output is correct
20 Correct 27 ms 18992 KB Output is correct
21 Correct 31 ms 18748 KB Output is correct
22 Correct 29 ms 18752 KB Output is correct
23 Correct 28 ms 18740 KB Output is correct
24 Correct 28 ms 18740 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 18740 KB Output is correct
2 Correct 33 ms 18748 KB Output is correct
3 Correct 31 ms 18748 KB Output is correct
4 Correct 28 ms 18812 KB Output is correct
5 Correct 31 ms 18748 KB Output is correct
6 Correct 31 ms 18740 KB Output is correct
7 Correct 28 ms 18748 KB Output is correct
8 Correct 30 ms 18816 KB Output is correct
9 Correct 27 ms 18740 KB Output is correct
10 Correct 31 ms 18740 KB Output is correct
11 Correct 32 ms 18748 KB Output is correct
12 Correct 30 ms 18748 KB Output is correct
13 Correct 28 ms 18684 KB Output is correct
14 Correct 31 ms 18680 KB Output is correct
15 Correct 36 ms 18748 KB Output is correct
16 Correct 26 ms 18560 KB Output is correct
17 Correct 35 ms 18788 KB Output is correct
18 Correct 36 ms 18732 KB Output is correct
19 Correct 31 ms 18748 KB Output is correct
20 Correct 27 ms 18992 KB Output is correct
21 Correct 31 ms 18748 KB Output is correct
22 Correct 29 ms 18752 KB Output is correct
23 Correct 28 ms 18740 KB Output is correct
24 Correct 28 ms 18740 KB Output is correct
25 Correct 29 ms 18748 KB Output is correct
26 Correct 125 ms 26764 KB Output is correct
27 Correct 112 ms 29988 KB Output is correct
28 Correct 126 ms 28196 KB Output is correct
29 Correct 110 ms 26568 KB Output is correct
30 Correct 123 ms 26660 KB Output is correct
31 Correct 31 ms 18740 KB Output is correct
32 Correct 131 ms 50196 KB Output is correct
33 Correct 28 ms 18740 KB Output is correct
34 Correct 92 ms 26868 KB Output is correct
35 Correct 110 ms 27172 KB Output is correct
36 Correct 122 ms 28024 KB Output is correct
37 Correct 121 ms 28708 KB Output is correct
38 Correct 30 ms 18744 KB Output is correct
39 Correct 124 ms 27328 KB Output is correct
40 Correct 121 ms 26712 KB Output is correct
41 Correct 119 ms 27168 KB Output is correct
42 Correct 111 ms 27128 KB Output is correct
43 Correct 102 ms 28048 KB Output is correct
44 Correct 30 ms 18740 KB Output is correct
45 Correct 131 ms 35108 KB Output is correct
46 Correct 118 ms 26896 KB Output is correct
47 Correct 32 ms 18740 KB Output is correct
48 Correct 124 ms 26912 KB Output is correct
49 Correct 91 ms 26912 KB Output is correct
50 Correct 127 ms 51344 KB Output is correct
51 Correct 127 ms 27428 KB Output is correct
52 Correct 97 ms 26916 KB Output is correct
53 Correct 107 ms 27172 KB Output is correct
54 Correct 123 ms 26708 KB Output is correct

Subtask #3
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 18740 KB Output is correct
2 Correct 33 ms 18748 KB Output is correct
3 Correct 31 ms 18748 KB Output is correct
4 Correct 28 ms 18812 KB Output is correct
5 Correct 31 ms 18748 KB Output is correct
6 Correct 31 ms 18740 KB Output is correct
7 Correct 28 ms 18748 KB Output is correct
8 Correct 30 ms 18816 KB Output is correct
9 Correct 27 ms 18740 KB Output is correct
10 Correct 31 ms 18740 KB Output is correct
11 Correct 32 ms 18748 KB Output is correct
12 Correct 30 ms 18748 KB Output is correct
13 Correct 28 ms 18684 KB Output is correct
14 Correct 31 ms 18680 KB Output is correct
15 Correct 36 ms 18748 KB Output is correct
16 Correct 26 ms 18560 KB Output is correct
17 Correct 35 ms 18788 KB Output is correct
18 Correct 36 ms 18732 KB Output is correct
19 Correct 31 ms 18748 KB Output is correct
20 Correct 27 ms 18992 KB Output is correct
21 Correct 31 ms 18748 KB Output is correct
22 Correct 29 ms 18752 KB Output is correct
23 Correct 28 ms 18740 KB Output is correct
24 Correct 28 ms 18740 KB Output is correct
25 Correct 34 ms 18740 KB Output is correct
26 Correct 342 ms 48676 KB Output is correct
27 Correct 422 ms 54308 KB Output is correct
28 Correct 117 ms 29984 KB Output is correct
29 Correct 28 ms 18852 KB Output is correct
30 Correct 29 ms 18792 KB Output is correct
31 Correct 441 ms 53544 KB Output is correct
32 Correct 98 ms 26896 KB Output is correct
33 Runtime error 381 ms 262144 KB Execution killed with signal 9
34 Halted 0 ms 0 KB -

Subtask #4
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 326 ms 48676 KB Output is correct
2 Correct 302 ms 62936 KB Output is correct
3 Correct 125 ms 26916 KB Output is correct
4 Correct 113 ms 29984 KB Output is correct
5 Correct 30 ms 18752 KB Output is correct
6 Correct 31 ms 18740 KB Output is correct
7 Correct 97 ms 26916 KB Output is correct
8 Correct 542 ms 62348 KB Output is correct
9 Correct 123 ms 28048 KB Output is correct
10 Correct 458 ms 53868 KB Output is correct
11 Correct 31 ms 18740 KB Output is correct
12 Correct 449 ms 58508 KB Output is correct
13 Correct 570 ms 66084 KB Output is correct
14 Correct 372 ms 61624 KB Output is correct
15 Correct 338 ms 48980 KB Output is correct
16 Correct 111 ms 27172 KB Output is correct
17 Correct 29 ms 18844 KB Output is correct
18 Correct 384 ms 61576 KB Output is correct
19 Runtime error 448 ms 262144 KB Execution killed with signal 9
20 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 18740 KB Output is correct
2 Correct 33 ms 18748 KB Output is correct
3 Correct 31 ms 18748 KB Output is correct
4 Correct 28 ms 18812 KB Output is correct
5 Correct 31 ms 18748 KB Output is correct
6 Correct 31 ms 18740 KB Output is correct
7 Correct 28 ms 18748 KB Output is correct
8 Correct 30 ms 18816 KB Output is correct
9 Correct 27 ms 18740 KB Output is correct
10 Correct 31 ms 18740 KB Output is correct
11 Correct 32 ms 18748 KB Output is correct
12 Correct 30 ms 18748 KB Output is correct
13 Correct 28 ms 18684 KB Output is correct
14 Correct 31 ms 18680 KB Output is correct
15 Correct 36 ms 18748 KB Output is correct
16 Correct 26 ms 18560 KB Output is correct
17 Correct 35 ms 18788 KB Output is correct
18 Correct 36 ms 18732 KB Output is correct
19 Correct 31 ms 18748 KB Output is correct
20 Correct 27 ms 18992 KB Output is correct
21 Correct 31 ms 18748 KB Output is correct
22 Correct 29 ms 18752 KB Output is correct
23 Correct 28 ms 18740 KB Output is correct
24 Correct 28 ms 18740 KB Output is correct
25 Correct 29 ms 18748 KB Output is correct
26 Correct 125 ms 26764 KB Output is correct
27 Correct 112 ms 29988 KB Output is correct
28 Correct 126 ms 28196 KB Output is correct
29 Correct 110 ms 26568 KB Output is correct
30 Correct 123 ms 26660 KB Output is correct
31 Correct 31 ms 18740 KB Output is correct
32 Correct 131 ms 50196 KB Output is correct
33 Correct 28 ms 18740 KB Output is correct
34 Correct 92 ms 26868 KB Output is correct
35 Correct 110 ms 27172 KB Output is correct
36 Correct 122 ms 28024 KB Output is correct
37 Correct 121 ms 28708 KB Output is correct
38 Correct 30 ms 18744 KB Output is correct
39 Correct 124 ms 27328 KB Output is correct
40 Correct 121 ms 26712 KB Output is correct
41 Correct 119 ms 27168 KB Output is correct
42 Correct 111 ms 27128 KB Output is correct
43 Correct 102 ms 28048 KB Output is correct
44 Correct 30 ms 18740 KB Output is correct
45 Correct 131 ms 35108 KB Output is correct
46 Correct 118 ms 26896 KB Output is correct
47 Correct 32 ms 18740 KB Output is correct
48 Correct 124 ms 26912 KB Output is correct
49 Correct 91 ms 26912 KB Output is correct
50 Correct 127 ms 51344 KB Output is correct
51 Correct 127 ms 27428 KB Output is correct
52 Correct 97 ms 26916 KB Output is correct
53 Correct 107 ms 27172 KB Output is correct
54 Correct 123 ms 26708 KB Output is correct
55 Correct 34 ms 18740 KB Output is correct
56 Correct 342 ms 48676 KB Output is correct
57 Correct 422 ms 54308 KB Output is correct
58 Correct 117 ms 29984 KB Output is correct
59 Correct 28 ms 18852 KB Output is correct
60 Correct 29 ms 18792 KB Output is correct
61 Correct 441 ms 53544 KB Output is correct
62 Correct 98 ms 26896 KB Output is correct
63 Runtime error 381 ms 262144 KB Execution killed with signal 9
64 Halted 0 ms 0 KB -