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답안 #1045437

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1045437 2024-08-06T01:00:50 Z RauPro Mergers (JOI19_mergers) PyPy 3
34 / 100
 674 ms 262144 KB 
import sys
from collections import defaultdict
from sys import setrecursionlimit, stdin, stdout

setrecursionlimit(200000)


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 = 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 28 ms 18748 KB Output is correct
2 Correct 33 ms 18688 KB Output is correct
3 Correct 39 ms 18740 KB Output is correct
4 Correct 31 ms 18748 KB Output is correct
5 Correct 31 ms 18748 KB Output is correct
6 Correct 31 ms 18788 KB Output is correct
7 Correct 36 ms 18740 KB Output is correct
8 Correct 31 ms 18748 KB Output is correct
9 Correct 36 ms 18672 KB Output is correct
10 Correct 29 ms 18748 KB Output is correct
11 Correct 30 ms 18748 KB Output is correct
12 Correct 29 ms 18748 KB Output is correct
13 Correct 30 ms 18740 KB Output is correct
14 Correct 31 ms 19000 KB Output is correct
15 Correct 30 ms 18724 KB Output is correct
16 Correct 31 ms 18576 KB Output is correct
17 Correct 28 ms 18740 KB Output is correct
18 Correct 29 ms 18748 KB Output is correct
19 Correct 37 ms 18740 KB Output is correct
20 Correct 26 ms 18748 KB Output is correct
21 Correct 30 ms 18720 KB Output is correct
22 Correct 29 ms 18908 KB Output is correct
23 Correct 33 ms 18740 KB Output is correct
24 Correct 36 ms 18740 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 18748 KB Output is correct
2 Correct 33 ms 18688 KB Output is correct
3 Correct 39 ms 18740 KB Output is correct
4 Correct 31 ms 18748 KB Output is correct
5 Correct 31 ms 18748 KB Output is correct
6 Correct 31 ms 18788 KB Output is correct
7 Correct 36 ms 18740 KB Output is correct
8 Correct 31 ms 18748 KB Output is correct
9 Correct 36 ms 18672 KB Output is correct
10 Correct 29 ms 18748 KB Output is correct
11 Correct 30 ms 18748 KB Output is correct
12 Correct 29 ms 18748 KB Output is correct
13 Correct 30 ms 18740 KB Output is correct
14 Correct 31 ms 19000 KB Output is correct
15 Correct 30 ms 18724 KB Output is correct
16 Correct 31 ms 18576 KB Output is correct
17 Correct 28 ms 18740 KB Output is correct
18 Correct 29 ms 18748 KB Output is correct
19 Correct 37 ms 18740 KB Output is correct
20 Correct 26 ms 18748 KB Output is correct
21 Correct 30 ms 18720 KB Output is correct
22 Correct 29 ms 18908 KB Output is correct
23 Correct 33 ms 18740 KB Output is correct
24 Correct 36 ms 18740 KB Output is correct
25 Correct 43 ms 18780 KB Output is correct
26 Correct 140 ms 26656 KB Output is correct
27 Correct 114 ms 30808 KB Output is correct
28 Correct 118 ms 32292 KB Output is correct
29 Correct 111 ms 26404 KB Output is correct
30 Correct 142 ms 26920 KB Output is correct
31 Correct 29 ms 18748 KB Output is correct
32 Correct 130 ms 50212 KB Output is correct
33 Correct 31 ms 18740 KB Output is correct
34 Correct 101 ms 26916 KB Output is correct
35 Correct 116 ms 27212 KB Output is correct
36 Correct 176 ms 27956 KB Output is correct
37 Correct 141 ms 28456 KB Output is correct
38 Correct 33 ms 18708 KB Output is correct
39 Correct 124 ms 26860 KB Output is correct
40 Correct 129 ms 27172 KB Output is correct
41 Correct 122 ms 26952 KB Output is correct
42 Correct 107 ms 27172 KB Output is correct
43 Correct 107 ms 30364 KB Output is correct
44 Correct 32 ms 18936 KB Output is correct
45 Correct 138 ms 34720 KB Output is correct
46 Correct 121 ms 26660 KB Output is correct
47 Correct 34 ms 18744 KB Output is correct
48 Correct 135 ms 27172 KB Output is correct
49 Correct 98 ms 26612 KB Output is correct
50 Correct 126 ms 51236 KB Output is correct
51 Correct 130 ms 27424 KB Output is correct
52 Correct 109 ms 26836 KB Output is correct
53 Correct 110 ms 26660 KB Output is correct
54 Correct 123 ms 26916 KB Output is correct

Subtask #3
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 18748 KB Output is correct
2 Correct 33 ms 18688 KB Output is correct
3 Correct 39 ms 18740 KB Output is correct
4 Correct 31 ms 18748 KB Output is correct
5 Correct 31 ms 18748 KB Output is correct
6 Correct 31 ms 18788 KB Output is correct
7 Correct 36 ms 18740 KB Output is correct
8 Correct 31 ms 18748 KB Output is correct
9 Correct 36 ms 18672 KB Output is correct
10 Correct 29 ms 18748 KB Output is correct
11 Correct 30 ms 18748 KB Output is correct
12 Correct 29 ms 18748 KB Output is correct
13 Correct 30 ms 18740 KB Output is correct
14 Correct 31 ms 19000 KB Output is correct
15 Correct 30 ms 18724 KB Output is correct
16 Correct 31 ms 18576 KB Output is correct
17 Correct 28 ms 18740 KB Output is correct
18 Correct 29 ms 18748 KB Output is correct
19 Correct 37 ms 18740 KB Output is correct
20 Correct 26 ms 18748 KB Output is correct
21 Correct 30 ms 18720 KB Output is correct
22 Correct 29 ms 18908 KB Output is correct
23 Correct 33 ms 18740 KB Output is correct
24 Correct 36 ms 18740 KB Output is correct
25 Correct 35 ms 18748 KB Output is correct
26 Correct 300 ms 48856 KB Output is correct
27 Correct 451 ms 55356 KB Output is correct
28 Correct 147 ms 30240 KB Output is correct
29 Correct 30 ms 18740 KB Output is correct
30 Correct 33 ms 18740 KB Output is correct
31 Correct 482 ms 56676 KB Output is correct
32 Correct 124 ms 26824 KB Output is correct
33 Runtime error 392 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 335 ms 48448 KB Output is correct
2 Correct 316 ms 63184 KB Output is correct
3 Correct 125 ms 26908 KB Output is correct
4 Correct 114 ms 30336 KB Output is correct
5 Correct 29 ms 18740 KB Output is correct
6 Correct 29 ms 18700 KB Output is correct
7 Correct 111 ms 26896 KB Output is correct
8 Correct 567 ms 65056 KB Output is correct
9 Correct 137 ms 28196 KB Output is correct
10 Correct 536 ms 60992 KB Output is correct
11 Correct 31 ms 18748 KB Output is correct
12 Correct 466 ms 58844 KB Output is correct
13 Correct 674 ms 72764 KB Output is correct
14 Correct 399 ms 61292 KB Output is correct
15 Correct 340 ms 48932 KB Output is correct
16 Correct 134 ms 26944 KB Output is correct
17 Correct 34 ms 18740 KB Output is correct
18 Correct 354 ms 61968 KB Output is correct
19 Runtime error 451 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 28 ms 18748 KB Output is correct
2 Correct 33 ms 18688 KB Output is correct
3 Correct 39 ms 18740 KB Output is correct
4 Correct 31 ms 18748 KB Output is correct
5 Correct 31 ms 18748 KB Output is correct
6 Correct 31 ms 18788 KB Output is correct
7 Correct 36 ms 18740 KB Output is correct
8 Correct 31 ms 18748 KB Output is correct
9 Correct 36 ms 18672 KB Output is correct
10 Correct 29 ms 18748 KB Output is correct
11 Correct 30 ms 18748 KB Output is correct
12 Correct 29 ms 18748 KB Output is correct
13 Correct 30 ms 18740 KB Output is correct
14 Correct 31 ms 19000 KB Output is correct
15 Correct 30 ms 18724 KB Output is correct
16 Correct 31 ms 18576 KB Output is correct
17 Correct 28 ms 18740 KB Output is correct
18 Correct 29 ms 18748 KB Output is correct
19 Correct 37 ms 18740 KB Output is correct
20 Correct 26 ms 18748 KB Output is correct
21 Correct 30 ms 18720 KB Output is correct
22 Correct 29 ms 18908 KB Output is correct
23 Correct 33 ms 18740 KB Output is correct
24 Correct 36 ms 18740 KB Output is correct
25 Correct 43 ms 18780 KB Output is correct
26 Correct 140 ms 26656 KB Output is correct
27 Correct 114 ms 30808 KB Output is correct
28 Correct 118 ms 32292 KB Output is correct
29 Correct 111 ms 26404 KB Output is correct
30 Correct 142 ms 26920 KB Output is correct
31 Correct 29 ms 18748 KB Output is correct
32 Correct 130 ms 50212 KB Output is correct
33 Correct 31 ms 18740 KB Output is correct
34 Correct 101 ms 26916 KB Output is correct
35 Correct 116 ms 27212 KB Output is correct
36 Correct 176 ms 27956 KB Output is correct
37 Correct 141 ms 28456 KB Output is correct
38 Correct 33 ms 18708 KB Output is correct
39 Correct 124 ms 26860 KB Output is correct
40 Correct 129 ms 27172 KB Output is correct
41 Correct 122 ms 26952 KB Output is correct
42 Correct 107 ms 27172 KB Output is correct
43 Correct 107 ms 30364 KB Output is correct
44 Correct 32 ms 18936 KB Output is correct
45 Correct 138 ms 34720 KB Output is correct
46 Correct 121 ms 26660 KB Output is correct
47 Correct 34 ms 18744 KB Output is correct
48 Correct 135 ms 27172 KB Output is correct
49 Correct 98 ms 26612 KB Output is correct
50 Correct 126 ms 51236 KB Output is correct
51 Correct 130 ms 27424 KB Output is correct
52 Correct 109 ms 26836 KB Output is correct
53 Correct 110 ms 26660 KB Output is correct
54 Correct 123 ms 26916 KB Output is correct
55 Correct 35 ms 18748 KB Output is correct
56 Correct 300 ms 48856 KB Output is correct
57 Correct 451 ms 55356 KB Output is correct
58 Correct 147 ms 30240 KB Output is correct
59 Correct 30 ms 18740 KB Output is correct
60 Correct 33 ms 18740 KB Output is correct
61 Correct 482 ms 56676 KB Output is correct
62 Correct 124 ms 26824 KB Output is correct
63 Runtime error 392 ms 262144 KB Execution killed with signal 9
64 Halted 0 ms 0 KB -