Submission #1045492

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1045492	2024-08-06T03:17:04 Z	RauPro	Mergers (JOI19_mergers)	PyPy 3	34 / 100	543 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	32 ms	18740 KB	Output is correct
2	Correct	31 ms	18740 KB	Output is correct
3	Correct	30 ms	18748 KB	Output is correct
4	Correct	28 ms	18748 KB	Output is correct
5	Correct	29 ms	18808 KB	Output is correct
6	Correct	31 ms	18740 KB	Output is correct
7	Correct	32 ms	18740 KB	Output is correct
8	Correct	32 ms	18740 KB	Output is correct
9	Correct	34 ms	18640 KB	Output is correct
10	Correct	28 ms	18716 KB	Output is correct
11	Correct	32 ms	18740 KB	Output is correct
12	Correct	29 ms	18740 KB	Output is correct
13	Correct	27 ms	18740 KB	Output is correct
14	Correct	34 ms	18836 KB	Output is correct
15	Correct	30 ms	18744 KB	Output is correct
16	Correct	29 ms	18748 KB	Output is correct
17	Correct	32 ms	18748 KB	Output is correct
18	Correct	31 ms	18784 KB	Output is correct
19	Correct	28 ms	18748 KB	Output is correct
20	Correct	28 ms	18740 KB	Output is correct
21	Correct	31 ms	18740 KB	Output is correct
22	Correct	31 ms	18780 KB	Output is correct
23	Correct	28 ms	18748 KB	Output is correct
24	Correct	34 ms	18808 KB	Output is correct

Subtask #2
24.0 / 24.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	32 ms	18740 KB	Output is correct
2	Correct	31 ms	18740 KB	Output is correct
3	Correct	30 ms	18748 KB	Output is correct
4	Correct	28 ms	18748 KB	Output is correct
5	Correct	29 ms	18808 KB	Output is correct
6	Correct	31 ms	18740 KB	Output is correct
7	Correct	32 ms	18740 KB	Output is correct
8	Correct	32 ms	18740 KB	Output is correct
9	Correct	34 ms	18640 KB	Output is correct
10	Correct	28 ms	18716 KB	Output is correct
11	Correct	32 ms	18740 KB	Output is correct
12	Correct	29 ms	18740 KB	Output is correct
13	Correct	27 ms	18740 KB	Output is correct
14	Correct	34 ms	18836 KB	Output is correct
15	Correct	30 ms	18744 KB	Output is correct
16	Correct	29 ms	18748 KB	Output is correct
17	Correct	32 ms	18748 KB	Output is correct
18	Correct	31 ms	18784 KB	Output is correct
19	Correct	28 ms	18748 KB	Output is correct
20	Correct	28 ms	18740 KB	Output is correct
21	Correct	31 ms	18740 KB	Output is correct
22	Correct	31 ms	18780 KB	Output is correct
23	Correct	28 ms	18748 KB	Output is correct
24	Correct	34 ms	18808 KB	Output is correct
25	Correct	32 ms	18768 KB	Output is correct
26	Correct	148 ms	27208 KB	Output is correct
27	Correct	109 ms	29476 KB	Output is correct
28	Correct	112 ms	28652 KB	Output is correct
29	Correct	102 ms	26272 KB	Output is correct
30	Correct	122 ms	27428 KB	Output is correct
31	Correct	32 ms	18740 KB	Output is correct
32	Correct	153 ms	47908 KB	Output is correct
33	Correct	29 ms	18748 KB	Output is correct
34	Correct	94 ms	26856 KB	Output is correct
35	Correct	100 ms	27068 KB	Output is correct
36	Correct	123 ms	27172 KB	Output is correct
37	Correct	129 ms	27060 KB	Output is correct
38	Correct	31 ms	18740 KB	Output is correct
39	Correct	139 ms	27424 KB	Output is correct
40	Correct	116 ms	27496 KB	Output is correct
41	Correct	122 ms	27172 KB	Output is correct
42	Correct	112 ms	27168 KB	Output is correct
43	Correct	101 ms	29732 KB	Output is correct
44	Correct	31 ms	18740 KB	Output is correct
45	Correct	112 ms	34588 KB	Output is correct
46	Correct	162 ms	27172 KB	Output is correct
47	Correct	30 ms	18740 KB	Output is correct
48	Correct	123 ms	27008 KB	Output is correct
49	Correct	94 ms	26660 KB	Output is correct
50	Correct	117 ms	49696 KB	Output is correct
51	Correct	120 ms	26916 KB	Output is correct
52	Correct	108 ms	27152 KB	Output is correct
53	Correct	113 ms	26916 KB	Output is correct
54	Correct	119 ms	27176 KB	Output is correct

Subtask #3
0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	32 ms	18740 KB	Output is correct
2	Correct	31 ms	18740 KB	Output is correct
3	Correct	30 ms	18748 KB	Output is correct
4	Correct	28 ms	18748 KB	Output is correct
5	Correct	29 ms	18808 KB	Output is correct
6	Correct	31 ms	18740 KB	Output is correct
7	Correct	32 ms	18740 KB	Output is correct
8	Correct	32 ms	18740 KB	Output is correct
9	Correct	34 ms	18640 KB	Output is correct
10	Correct	28 ms	18716 KB	Output is correct
11	Correct	32 ms	18740 KB	Output is correct
12	Correct	29 ms	18740 KB	Output is correct
13	Correct	27 ms	18740 KB	Output is correct
14	Correct	34 ms	18836 KB	Output is correct
15	Correct	30 ms	18744 KB	Output is correct
16	Correct	29 ms	18748 KB	Output is correct
17	Correct	32 ms	18748 KB	Output is correct
18	Correct	31 ms	18784 KB	Output is correct
19	Correct	28 ms	18748 KB	Output is correct
20	Correct	28 ms	18740 KB	Output is correct
21	Correct	31 ms	18740 KB	Output is correct
22	Correct	31 ms	18780 KB	Output is correct
23	Correct	28 ms	18748 KB	Output is correct
24	Correct	34 ms	18808 KB	Output is correct
25	Correct	31 ms	18776 KB	Output is correct
26	Correct	358 ms	50720 KB	Output is correct
27	Correct	414 ms	53032 KB	Output is correct
28	Correct	109 ms	29476 KB	Output is correct
29	Correct	30 ms	18740 KB	Output is correct
30	Correct	31 ms	18748 KB	Output is correct
31	Correct	430 ms	52356 KB	Output is correct
32	Correct	96 ms	26660 KB	Output is correct
33	Runtime error	377 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	363 ms	49712 KB	Output is correct
2	Correct	319 ms	50944 KB	Output is correct
3	Correct	132 ms	26832 KB	Output is correct
4	Correct	111 ms	29732 KB	Output is correct
5	Correct	31 ms	18748 KB	Output is correct
6	Correct	29 ms	18740 KB	Output is correct
7	Correct	98 ms	26876 KB	Output is correct
8	Correct	525 ms	62452 KB	Output is correct
9	Correct	118 ms	27172 KB	Output is correct
10	Correct	466 ms	52796 KB	Output is correct
11	Correct	30 ms	18748 KB	Output is correct
12	Correct	430 ms	59264 KB	Output is correct
13	Correct	543 ms	63688 KB	Output is correct
14	Correct	336 ms	50720 KB	Output is correct
15	Correct	346 ms	50720 KB	Output is correct
16	Correct	111 ms	26800 KB	Output is correct
17	Correct	31 ms	18740 KB	Output is correct
18	Correct	370 ms	52736 KB	Output is correct
19	Runtime error	446 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	32 ms	18740 KB	Output is correct
2	Correct	31 ms	18740 KB	Output is correct
3	Correct	30 ms	18748 KB	Output is correct
4	Correct	28 ms	18748 KB	Output is correct
5	Correct	29 ms	18808 KB	Output is correct
6	Correct	31 ms	18740 KB	Output is correct
7	Correct	32 ms	18740 KB	Output is correct
8	Correct	32 ms	18740 KB	Output is correct
9	Correct	34 ms	18640 KB	Output is correct
10	Correct	28 ms	18716 KB	Output is correct
11	Correct	32 ms	18740 KB	Output is correct
12	Correct	29 ms	18740 KB	Output is correct
13	Correct	27 ms	18740 KB	Output is correct
14	Correct	34 ms	18836 KB	Output is correct
15	Correct	30 ms	18744 KB	Output is correct
16	Correct	29 ms	18748 KB	Output is correct
17	Correct	32 ms	18748 KB	Output is correct
18	Correct	31 ms	18784 KB	Output is correct
19	Correct	28 ms	18748 KB	Output is correct
20	Correct	28 ms	18740 KB	Output is correct
21	Correct	31 ms	18740 KB	Output is correct
22	Correct	31 ms	18780 KB	Output is correct
23	Correct	28 ms	18748 KB	Output is correct
24	Correct	34 ms	18808 KB	Output is correct
25	Correct	32 ms	18768 KB	Output is correct
26	Correct	148 ms	27208 KB	Output is correct
27	Correct	109 ms	29476 KB	Output is correct
28	Correct	112 ms	28652 KB	Output is correct
29	Correct	102 ms	26272 KB	Output is correct
30	Correct	122 ms	27428 KB	Output is correct
31	Correct	32 ms	18740 KB	Output is correct
32	Correct	153 ms	47908 KB	Output is correct
33	Correct	29 ms	18748 KB	Output is correct
34	Correct	94 ms	26856 KB	Output is correct
35	Correct	100 ms	27068 KB	Output is correct
36	Correct	123 ms	27172 KB	Output is correct
37	Correct	129 ms	27060 KB	Output is correct
38	Correct	31 ms	18740 KB	Output is correct
39	Correct	139 ms	27424 KB	Output is correct
40	Correct	116 ms	27496 KB	Output is correct
41	Correct	122 ms	27172 KB	Output is correct
42	Correct	112 ms	27168 KB	Output is correct
43	Correct	101 ms	29732 KB	Output is correct
44	Correct	31 ms	18740 KB	Output is correct
45	Correct	112 ms	34588 KB	Output is correct
46	Correct	162 ms	27172 KB	Output is correct
47	Correct	30 ms	18740 KB	Output is correct
48	Correct	123 ms	27008 KB	Output is correct
49	Correct	94 ms	26660 KB	Output is correct
50	Correct	117 ms	49696 KB	Output is correct
51	Correct	120 ms	26916 KB	Output is correct
52	Correct	108 ms	27152 KB	Output is correct
53	Correct	113 ms	26916 KB	Output is correct
54	Correct	119 ms	27176 KB	Output is correct
55	Correct	31 ms	18776 KB	Output is correct
56	Correct	358 ms	50720 KB	Output is correct
57	Correct	414 ms	53032 KB	Output is correct
58	Correct	109 ms	29476 KB	Output is correct
59	Correct	30 ms	18740 KB	Output is correct
60	Correct	31 ms	18748 KB	Output is correct
61	Correct	430 ms	52356 KB	Output is correct
62	Correct	96 ms	26660 KB	Output is correct
63	Runtime error	377 ms	262144 KB	Execution killed with signal 9
64	Halted	0 ms	0 KB	-

Submission #1045492

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