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답안 #1045447

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1045447 2024-08-06T01:09:42 Z RauPro Mergers (JOI19_mergers) PyPy 3
34 / 100
 667 ms 262144 KB 
import sys
from collections import defaultdict
from sys import setrecursionlimit, stdin, stdout

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

    def find(self, x):
        if self.par[x] == x:
            return x
        self.par[x] = self.find(self.par[x])
        return self.par[x]

    def merge(self, a, b):
        a = self.find(a)
        b = self.find(b)
        if a != b:
            self.par[b] = 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 = [[] for i in range(n+1)]
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 = [[] for i in range(n+1)]
for i in range(n):
    a = int(input()) - 1
    groups[a].append(i)

for group in groups:
    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 30 ms 18744 KB Output is correct
3 Correct 34 ms 18748 KB Output is correct
4 Correct 27 ms 18748 KB Output is correct
5 Correct 26 ms 18788 KB Output is correct
6 Correct 30 ms 18728 KB Output is correct
7 Correct 28 ms 18740 KB Output is correct
8 Correct 33 ms 19236 KB Output is correct
9 Correct 28 ms 18700 KB Output is correct
10 Correct 27 ms 18748 KB Output is correct
11 Correct 29 ms 18740 KB Output is correct
12 Correct 35 ms 18900 KB Output is correct
13 Correct 28 ms 18708 KB Output is correct
14 Correct 30 ms 18748 KB Output is correct
15 Correct 30 ms 18804 KB Output is correct
16 Correct 28 ms 18668 KB Output is correct
17 Correct 28 ms 18748 KB Output is correct
18 Correct 35 ms 18740 KB Output is correct
19 Correct 25 ms 18788 KB Output is correct
20 Correct 28 ms 18748 KB Output is correct
21 Correct 30 ms 18720 KB Output is correct
22 Correct 29 ms 18736 KB Output is correct
23 Correct 27 ms 18784 KB Output is correct
24 Correct 28 ms 18872 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 30 ms 18744 KB Output is correct
3 Correct 34 ms 18748 KB Output is correct
4 Correct 27 ms 18748 KB Output is correct
5 Correct 26 ms 18788 KB Output is correct
6 Correct 30 ms 18728 KB Output is correct
7 Correct 28 ms 18740 KB Output is correct
8 Correct 33 ms 19236 KB Output is correct
9 Correct 28 ms 18700 KB Output is correct
10 Correct 27 ms 18748 KB Output is correct
11 Correct 29 ms 18740 KB Output is correct
12 Correct 35 ms 18900 KB Output is correct
13 Correct 28 ms 18708 KB Output is correct
14 Correct 30 ms 18748 KB Output is correct
15 Correct 30 ms 18804 KB Output is correct
16 Correct 28 ms 18668 KB Output is correct
17 Correct 28 ms 18748 KB Output is correct
18 Correct 35 ms 18740 KB Output is correct
19 Correct 25 ms 18788 KB Output is correct
20 Correct 28 ms 18748 KB Output is correct
21 Correct 30 ms 18720 KB Output is correct
22 Correct 29 ms 18736 KB Output is correct
23 Correct 27 ms 18784 KB Output is correct
24 Correct 28 ms 18872 KB Output is correct
25 Correct 29 ms 18748 KB Output is correct
26 Correct 132 ms 26920 KB Output is correct
27 Correct 124 ms 31528 KB Output is correct
28 Correct 120 ms 33140 KB Output is correct
29 Correct 100 ms 26404 KB Output is correct
30 Correct 129 ms 27172 KB Output is correct
31 Correct 28 ms 18748 KB Output is correct
32 Correct 125 ms 49300 KB Output is correct
33 Correct 29 ms 18740 KB Output is correct
34 Correct 96 ms 26400 KB Output is correct
35 Correct 104 ms 27040 KB Output is correct
36 Correct 117 ms 27304 KB Output is correct
37 Correct 119 ms 26912 KB Output is correct
38 Correct 31 ms 18892 KB Output is correct
39 Correct 129 ms 27684 KB Output is correct
40 Correct 112 ms 27684 KB Output is correct
41 Correct 121 ms 26660 KB Output is correct
42 Correct 110 ms 27172 KB Output is correct
43 Correct 106 ms 30244 KB Output is correct
44 Correct 35 ms 18740 KB Output is correct
45 Correct 120 ms 34456 KB Output is correct
46 Correct 117 ms 26856 KB Output is correct
47 Correct 29 ms 18732 KB Output is correct
48 Correct 133 ms 26920 KB Output is correct
49 Correct 91 ms 26604 KB Output is correct
50 Correct 116 ms 49712 KB Output is correct
51 Correct 124 ms 26856 KB Output is correct
52 Correct 111 ms 26660 KB Output is correct
53 Correct 115 ms 27336 KB Output is correct
54 Correct 119 ms 26660 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 30 ms 18744 KB Output is correct
3 Correct 34 ms 18748 KB Output is correct
4 Correct 27 ms 18748 KB Output is correct
5 Correct 26 ms 18788 KB Output is correct
6 Correct 30 ms 18728 KB Output is correct
7 Correct 28 ms 18740 KB Output is correct
8 Correct 33 ms 19236 KB Output is correct
9 Correct 28 ms 18700 KB Output is correct
10 Correct 27 ms 18748 KB Output is correct
11 Correct 29 ms 18740 KB Output is correct
12 Correct 35 ms 18900 KB Output is correct
13 Correct 28 ms 18708 KB Output is correct
14 Correct 30 ms 18748 KB Output is correct
15 Correct 30 ms 18804 KB Output is correct
16 Correct 28 ms 18668 KB Output is correct
17 Correct 28 ms 18748 KB Output is correct
18 Correct 35 ms 18740 KB Output is correct
19 Correct 25 ms 18788 KB Output is correct
20 Correct 28 ms 18748 KB Output is correct
21 Correct 30 ms 18720 KB Output is correct
22 Correct 29 ms 18736 KB Output is correct
23 Correct 27 ms 18784 KB Output is correct
24 Correct 28 ms 18872 KB Output is correct
25 Correct 28 ms 18736 KB Output is correct
26 Correct 336 ms 49656 KB Output is correct
27 Correct 455 ms 59428 KB Output is correct
28 Correct 118 ms 31520 KB Output is correct
29 Correct 28 ms 18740 KB Output is correct
30 Correct 28 ms 18716 KB Output is correct
31 Correct 460 ms 59396 KB Output is correct
32 Correct 92 ms 26632 KB Output is correct
33 Runtime error 370 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 323 ms 49144 KB Output is correct
2 Correct 313 ms 50976 KB Output is correct
3 Correct 126 ms 26852 KB Output is correct
4 Correct 120 ms 31524 KB Output is correct
5 Correct 33 ms 18748 KB Output is correct
6 Correct 33 ms 18816 KB Output is correct
7 Correct 92 ms 26804 KB Output is correct
8 Correct 630 ms 66492 KB Output is correct
9 Correct 118 ms 27172 KB Output is correct
10 Correct 530 ms 63612 KB Output is correct
11 Correct 32 ms 18748 KB Output is correct
12 Correct 412 ms 53888 KB Output is correct
13 Correct 667 ms 69668 KB Output is correct
14 Correct 354 ms 49416 KB Output is correct
15 Correct 334 ms 49952 KB Output is correct
16 Correct 113 ms 27168 KB Output is correct
17 Correct 28 ms 18740 KB Output is correct
18 Correct 367 ms 52000 KB Output is correct
19 Runtime error 429 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 30 ms 18744 KB Output is correct
3 Correct 34 ms 18748 KB Output is correct
4 Correct 27 ms 18748 KB Output is correct
5 Correct 26 ms 18788 KB Output is correct
6 Correct 30 ms 18728 KB Output is correct
7 Correct 28 ms 18740 KB Output is correct
8 Correct 33 ms 19236 KB Output is correct
9 Correct 28 ms 18700 KB Output is correct
10 Correct 27 ms 18748 KB Output is correct
11 Correct 29 ms 18740 KB Output is correct
12 Correct 35 ms 18900 KB Output is correct
13 Correct 28 ms 18708 KB Output is correct
14 Correct 30 ms 18748 KB Output is correct
15 Correct 30 ms 18804 KB Output is correct
16 Correct 28 ms 18668 KB Output is correct
17 Correct 28 ms 18748 KB Output is correct
18 Correct 35 ms 18740 KB Output is correct
19 Correct 25 ms 18788 KB Output is correct
20 Correct 28 ms 18748 KB Output is correct
21 Correct 30 ms 18720 KB Output is correct
22 Correct 29 ms 18736 KB Output is correct
23 Correct 27 ms 18784 KB Output is correct
24 Correct 28 ms 18872 KB Output is correct
25 Correct 29 ms 18748 KB Output is correct
26 Correct 132 ms 26920 KB Output is correct
27 Correct 124 ms 31528 KB Output is correct
28 Correct 120 ms 33140 KB Output is correct
29 Correct 100 ms 26404 KB Output is correct
30 Correct 129 ms 27172 KB Output is correct
31 Correct 28 ms 18748 KB Output is correct
32 Correct 125 ms 49300 KB Output is correct
33 Correct 29 ms 18740 KB Output is correct
34 Correct 96 ms 26400 KB Output is correct
35 Correct 104 ms 27040 KB Output is correct
36 Correct 117 ms 27304 KB Output is correct
37 Correct 119 ms 26912 KB Output is correct
38 Correct 31 ms 18892 KB Output is correct
39 Correct 129 ms 27684 KB Output is correct
40 Correct 112 ms 27684 KB Output is correct
41 Correct 121 ms 26660 KB Output is correct
42 Correct 110 ms 27172 KB Output is correct
43 Correct 106 ms 30244 KB Output is correct
44 Correct 35 ms 18740 KB Output is correct
45 Correct 120 ms 34456 KB Output is correct
46 Correct 117 ms 26856 KB Output is correct
47 Correct 29 ms 18732 KB Output is correct
48 Correct 133 ms 26920 KB Output is correct
49 Correct 91 ms 26604 KB Output is correct
50 Correct 116 ms 49712 KB Output is correct
51 Correct 124 ms 26856 KB Output is correct
52 Correct 111 ms 26660 KB Output is correct
53 Correct 115 ms 27336 KB Output is correct
54 Correct 119 ms 26660 KB Output is correct
55 Correct 28 ms 18736 KB Output is correct
56 Correct 336 ms 49656 KB Output is correct
57 Correct 455 ms 59428 KB Output is correct
58 Correct 118 ms 31520 KB Output is correct
59 Correct 28 ms 18740 KB Output is correct
60 Correct 28 ms 18716 KB Output is correct
61 Correct 460 ms 59396 KB Output is correct
62 Correct 92 ms 26632 KB Output is correct
63 Runtime error 370 ms 262144 KB Execution killed with signal 9
64 Halted 0 ms 0 KB -