Submission #1045449

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1045449	2024-08-06T01:12:40 Z	RauPro	Mergers (JOI19_mergers)	PyPy 3	34 / 100	521 ms	262144 KB

mergers

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 = [[] 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

#	Verdict	Execution time	Memory	Grader output
1	Correct	28 ms	18740 KB	Output is correct
2	Correct	40 ms	18740 KB	Output is correct
3	Correct	39 ms	18740 KB	Output is correct
4	Correct	27 ms	18568 KB	Output is correct
5	Correct	27 ms	18740 KB	Output is correct
6	Correct	31 ms	18740 KB	Output is correct
7	Correct	26 ms	18740 KB	Output is correct
8	Correct	30 ms	18856 KB	Output is correct
9	Correct	27 ms	18748 KB	Output is correct
10	Correct	27 ms	18684 KB	Output is correct
11	Correct	32 ms	18740 KB	Output is correct
12	Correct	32 ms	18840 KB	Output is correct
13	Correct	27 ms	18724 KB	Output is correct
14	Correct	29 ms	18748 KB	Output is correct
15	Correct	30 ms	18692 KB	Output is correct
16	Correct	28 ms	18740 KB	Output is correct
17	Correct	30 ms	18748 KB	Output is correct
18	Correct	32 ms	18784 KB	Output is correct
19	Correct	29 ms	18740 KB	Output is correct
20	Correct	28 ms	18748 KB	Output is correct
21	Correct	31 ms	18716 KB	Output is correct
22	Correct	33 ms	18772 KB	Output is correct
23	Correct	30 ms	18748 KB	Output is correct
24	Correct	29 ms	18792 KB	Output is correct

Subtask #2
24.0 / 24.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	28 ms	18740 KB	Output is correct
2	Correct	40 ms	18740 KB	Output is correct
3	Correct	39 ms	18740 KB	Output is correct
4	Correct	27 ms	18568 KB	Output is correct
5	Correct	27 ms	18740 KB	Output is correct
6	Correct	31 ms	18740 KB	Output is correct
7	Correct	26 ms	18740 KB	Output is correct
8	Correct	30 ms	18856 KB	Output is correct
9	Correct	27 ms	18748 KB	Output is correct
10	Correct	27 ms	18684 KB	Output is correct
11	Correct	32 ms	18740 KB	Output is correct
12	Correct	32 ms	18840 KB	Output is correct
13	Correct	27 ms	18724 KB	Output is correct
14	Correct	29 ms	18748 KB	Output is correct
15	Correct	30 ms	18692 KB	Output is correct
16	Correct	28 ms	18740 KB	Output is correct
17	Correct	30 ms	18748 KB	Output is correct
18	Correct	32 ms	18784 KB	Output is correct
19	Correct	29 ms	18740 KB	Output is correct
20	Correct	28 ms	18748 KB	Output is correct
21	Correct	31 ms	18716 KB	Output is correct
22	Correct	33 ms	18772 KB	Output is correct
23	Correct	30 ms	18748 KB	Output is correct
24	Correct	29 ms	18792 KB	Output is correct
25	Correct	29 ms	18748 KB	Output is correct
26	Correct	138 ms	27172 KB	Output is correct
27	Correct	136 ms	29476 KB	Output is correct
28	Correct	117 ms	28708 KB	Output is correct
29	Correct	98 ms	26404 KB	Output is correct
30	Correct	143 ms	27684 KB	Output is correct
31	Correct	31 ms	18740 KB	Output is correct
32	Correct	129 ms	49444 KB	Output is correct
33	Correct	30 ms	18740 KB	Output is correct
34	Correct	98 ms	26660 KB	Output is correct
35	Correct	121 ms	27172 KB	Output is correct
36	Correct	122 ms	27432 KB	Output is correct
37	Correct	139 ms	27172 KB	Output is correct
38	Correct	38 ms	18748 KB	Output is correct
39	Correct	132 ms	27424 KB	Output is correct
40	Correct	117 ms	27424 KB	Output is correct
41	Correct	121 ms	27168 KB	Output is correct
42	Correct	106 ms	26916 KB	Output is correct
43	Correct	106 ms	29988 KB	Output is correct
44	Correct	31 ms	18748 KB	Output is correct
45	Correct	113 ms	34680 KB	Output is correct
46	Correct	117 ms	27172 KB	Output is correct
47	Correct	32 ms	18748 KB	Output is correct
48	Correct	128 ms	26912 KB	Output is correct
49	Correct	96 ms	26656 KB	Output is correct
50	Correct	134 ms	49700 KB	Output is correct
51	Correct	144 ms	26912 KB	Output is correct
52	Correct	110 ms	26916 KB	Output is correct
53	Correct	113 ms	26888 KB	Output is correct
54	Correct	116 ms	27120 KB	Output is correct

Subtask #3
0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	28 ms	18740 KB	Output is correct
2	Correct	40 ms	18740 KB	Output is correct
3	Correct	39 ms	18740 KB	Output is correct
4	Correct	27 ms	18568 KB	Output is correct
5	Correct	27 ms	18740 KB	Output is correct
6	Correct	31 ms	18740 KB	Output is correct
7	Correct	26 ms	18740 KB	Output is correct
8	Correct	30 ms	18856 KB	Output is correct
9	Correct	27 ms	18748 KB	Output is correct
10	Correct	27 ms	18684 KB	Output is correct
11	Correct	32 ms	18740 KB	Output is correct
12	Correct	32 ms	18840 KB	Output is correct
13	Correct	27 ms	18724 KB	Output is correct
14	Correct	29 ms	18748 KB	Output is correct
15	Correct	30 ms	18692 KB	Output is correct
16	Correct	28 ms	18740 KB	Output is correct
17	Correct	30 ms	18748 KB	Output is correct
18	Correct	32 ms	18784 KB	Output is correct
19	Correct	29 ms	18740 KB	Output is correct
20	Correct	28 ms	18748 KB	Output is correct
21	Correct	31 ms	18716 KB	Output is correct
22	Correct	33 ms	18772 KB	Output is correct
23	Correct	30 ms	18748 KB	Output is correct
24	Correct	29 ms	18792 KB	Output is correct
25	Correct	31 ms	18732 KB	Output is correct
26	Correct	371 ms	49948 KB	Output is correct
27	Correct	424 ms	52004 KB	Output is correct
28	Correct	114 ms	29476 KB	Output is correct
29	Correct	30 ms	18716 KB	Output is correct
30	Correct	30 ms	18740 KB	Output is correct
31	Correct	420 ms	51492 KB	Output is correct
32	Correct	99 ms	26660 KB	Output is correct
33	Runtime error	397 ms	262144 KB	Execution killed with signal 9
34	Halted	0 ms	0 KB	-

Subtask #4
0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	352 ms	49700 KB	Output is correct
2	Correct	346 ms	50980 KB	Output is correct
3	Correct	128 ms	26908 KB	Output is correct
4	Correct	115 ms	29476 KB	Output is correct
5	Correct	28 ms	18740 KB	Output is correct
6	Correct	29 ms	18744 KB	Output is correct
7	Correct	97 ms	26792 KB	Output is correct
8	Correct	521 ms	61476 KB	Output is correct
9	Correct	127 ms	27172 KB	Output is correct
10	Correct	454 ms	51744 KB	Output is correct
11	Correct	32 ms	18800 KB	Output is correct
12	Correct	449 ms	60180 KB	Output is correct
13	Correct	511 ms	62752 KB	Output is correct
14	Correct	334 ms	49344 KB	Output is correct
15	Correct	371 ms	49700 KB	Output is correct
16	Correct	114 ms	26912 KB	Output is correct
17	Correct	42 ms	18896 KB	Output is correct
18	Correct	434 ms	52000 KB	Output is correct
19	Runtime error	468 ms	262144 KB	Execution killed with signal 9
20	Halted	0 ms	0 KB	-

Subtask #5
0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	28 ms	18740 KB	Output is correct
2	Correct	40 ms	18740 KB	Output is correct
3	Correct	39 ms	18740 KB	Output is correct
4	Correct	27 ms	18568 KB	Output is correct
5	Correct	27 ms	18740 KB	Output is correct
6	Correct	31 ms	18740 KB	Output is correct
7	Correct	26 ms	18740 KB	Output is correct
8	Correct	30 ms	18856 KB	Output is correct
9	Correct	27 ms	18748 KB	Output is correct
10	Correct	27 ms	18684 KB	Output is correct
11	Correct	32 ms	18740 KB	Output is correct
12	Correct	32 ms	18840 KB	Output is correct
13	Correct	27 ms	18724 KB	Output is correct
14	Correct	29 ms	18748 KB	Output is correct
15	Correct	30 ms	18692 KB	Output is correct
16	Correct	28 ms	18740 KB	Output is correct
17	Correct	30 ms	18748 KB	Output is correct
18	Correct	32 ms	18784 KB	Output is correct
19	Correct	29 ms	18740 KB	Output is correct
20	Correct	28 ms	18748 KB	Output is correct
21	Correct	31 ms	18716 KB	Output is correct
22	Correct	33 ms	18772 KB	Output is correct
23	Correct	30 ms	18748 KB	Output is correct
24	Correct	29 ms	18792 KB	Output is correct
25	Correct	29 ms	18748 KB	Output is correct
26	Correct	138 ms	27172 KB	Output is correct
27	Correct	136 ms	29476 KB	Output is correct
28	Correct	117 ms	28708 KB	Output is correct
29	Correct	98 ms	26404 KB	Output is correct
30	Correct	143 ms	27684 KB	Output is correct
31	Correct	31 ms	18740 KB	Output is correct
32	Correct	129 ms	49444 KB	Output is correct
33	Correct	30 ms	18740 KB	Output is correct
34	Correct	98 ms	26660 KB	Output is correct
35	Correct	121 ms	27172 KB	Output is correct
36	Correct	122 ms	27432 KB	Output is correct
37	Correct	139 ms	27172 KB	Output is correct
38	Correct	38 ms	18748 KB	Output is correct
39	Correct	132 ms	27424 KB	Output is correct
40	Correct	117 ms	27424 KB	Output is correct
41	Correct	121 ms	27168 KB	Output is correct
42	Correct	106 ms	26916 KB	Output is correct
43	Correct	106 ms	29988 KB	Output is correct
44	Correct	31 ms	18748 KB	Output is correct
45	Correct	113 ms	34680 KB	Output is correct
46	Correct	117 ms	27172 KB	Output is correct
47	Correct	32 ms	18748 KB	Output is correct
48	Correct	128 ms	26912 KB	Output is correct
49	Correct	96 ms	26656 KB	Output is correct
50	Correct	134 ms	49700 KB	Output is correct
51	Correct	144 ms	26912 KB	Output is correct
52	Correct	110 ms	26916 KB	Output is correct
53	Correct	113 ms	26888 KB	Output is correct
54	Correct	116 ms	27120 KB	Output is correct
55	Correct	31 ms	18732 KB	Output is correct
56	Correct	371 ms	49948 KB	Output is correct
57	Correct	424 ms	52004 KB	Output is correct
58	Correct	114 ms	29476 KB	Output is correct
59	Correct	30 ms	18716 KB	Output is correct
60	Correct	30 ms	18740 KB	Output is correct
61	Correct	420 ms	51492 KB	Output is correct
62	Correct	99 ms	26660 KB	Output is correct
63	Runtime error	397 ms	262144 KB	Execution killed with signal 9
64	Halted	0 ms	0 KB	-

Submission #1045449

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 24.0 / 24.0

Subtask #3 0 / 14.0

Subtask #4 0 / 22.0

Subtask #5 0 / 30.0

Subtask #1
10.0 / 10.0

Subtask #2
24.0 / 24.0

Subtask #3
0 / 14.0

Subtask #4
0 / 22.0

Subtask #5
0 / 30.0