QOJ.ac

QOJ

ID	Problem	Submitter	Result	Time	Memory	Language	File size	Submit time	Judge time
#747023	#9605. 新生舞会	A_programmer	100 ✓	114ms	27104kb	C++17	634b	2024-11-14 16:11:24	2024-11-14 16:11:24

Judging History

你现在查看的是最新测评结果

[2024-11-14 16:11:24]
评测

测评结果：100
用时：114ms
内存：27104kb

查看

[2024-11-14 16:11:24]
提交

answer

#include <bits/stdc++.h>
using namespace std;

const int maxn = 2e6 + 5;

int fa[maxn], sg[maxn], vl[maxn];
int main()
{
	ios::sync_with_stdio(false), cin.tie(0);
	
	int T, ans = 0; cin >> T;
	while (T--)
    {
        int n; cin >> n;
        for (int i = 2; i <= n; i++) cin >> fa[i];
        for (int i = 1; i <= n; i++) sg[i] = vl[i] = 0;
        for (int u = n; u; u--)
        {
            int x = (vl[u] + 1) & (-vl[u] - 1);
            sg[u] &= (-x), sg[u] |= x, vl[u]++;
            if (fa[u]) sg[fa[u]] ^= sg[u], vl[fa[u]] |= vl[u];
        }
        ans ^= sg[1];
    }
	cout << ans;
	return 0;
}

Source code, Language: C++17

Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 10

Accepted

Test #1:

score: 10

Accepted

time: 0ms

memory: 7760kb

input:

12
13
1 2 1 4 2 5 3 3 2 9 6 4
392
1 2 2 4 4 3 3 6 9 10 9 11 13 14 15 15 17 18 19 20 6 21 23 12 24 26 27 28 29 30 31 32 33 31 34 33 36 9 38 40 41 25 42 44 45 46 47 48 49 50 51 52 53 21 32 52 54 58 59 60 53 61 63 64 65 66 67 68 69 70 4 1 71 74 75 76 77 78 79 80 81 52 82 55 84 86 84 87 89 90 91 92 93 1...

output:

result:

ok 1 number(s): "1875"

Test #2:

score: 10

Accepted

time: 1ms

memory: 7700kb

input:

1
5000
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 5 21 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 79 85 87 88 89 90 91 92 93 94 95 96 97 98 99 100 10...

output:

result:

ok 1 number(s): "4950"

Test #3:

score: 10

Accepted

time: 0ms

memory: 7760kb

input:

1
5000
1 1 2 1 2 2 3 4 9 10 9 12 13 10 15 12 14 14 18 20 19 22 19 20 21 24 26 27 25 30 30 32 33 33 33 32 34 35 38 40 39 38 40 43 43 44 43 46 48 50 50 48 50 53 53 52 56 56 57 56 57 60 61 61 61 62 66 65 69 67 71 70 71 73 75 73 73 75 78 80 78 80 82 80 82 84 86 85 89 86 87 92 92 92 95 94 95 95 95 100 10...

output:

result:

ok 1 number(s): "3204"

Subtask #2:

score: 10

Accepted

Test #4:

score: 10

Accepted

time: 102ms

memory: 14184kb

input:

15
1
5
1 1 3 3
10603
1 2 2 1 5 3 6 3 2 7 6 6 10 5 4 16 4 16 18 4 11 22 8 14 2 26 22 9 10 20 28 26 1 27 8 35 3 4 6 25 14 9 33 44 15 26 28 34 24 18 48 5 33 11 37 32 19 14 41 6 46 60 8 25 62 32 59 27 54 50 62 44 51 18 53 46 42 31 26 11 78 71 40 60 2 13 35 84 34 76 51 88 33 13 88 85 80 70 21 74 54 79 75...

output:

result:

ok 1 number(s): "11527"

Test #5:

score: 10

Accepted

time: 114ms

memory: 27080kb

input:

1
2000000
1 1 1 4 5 5 3 6 4 1 11 2 11 4 15 11 11 11 1 16 11 15 22 6 7 23 4 5 8 2 27 1 5 3 15 30 30 21 34 28 22 24 25 33 45 13 1 46 27 27 39 15 42 44 38 27 52 39 27 58 36 37 29 34 30 44 29 55 17 60 34 30 61 29 61 13 12 67 70 9 67 40 54 72 14 80 42 27 49 88 12 2 53 8 57 93 74 22 22 85 61 79 89 55 23 1...

output:

result:

ok 1 number(s): "16384"

Subtask #3:

score: 30

Accepted

Dependency #1:

100%

Accepted

Test #6:

score: 30

Accepted

time: 5ms

memory: 7952kb

input:

16
4
1 1 3
9
1 2 3 4 5 6 7 8
58
1 2 2 4 5 6 7 8 9 2 10 12 13 5 8 14 17 4 18 20 21 22 8 10 4 23 27 5 26 21 20 28 26 33 35 36 37 38 22 39 41 42 43 44 34 45 47 3 31 48 51 52 53 54 44 44 21
30
1 2 1 4 5 2 6 8 8 2 11 5 9 13 10 16 17 18 12 10 11 19 12 23 23 3 16 26 29
36
1 1 1 2 2 1 2 3 1 10 6 3 12 3 8 9 ...

output:

result:

ok 1 number(s): "20841"

Test #7:

score: 30

Accepted

time: 7ms

memory: 10488kb

input:

1
200000
1 2 3 4 5 6 7 7 9 10 11 12 13 14 15 13 16 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100...

output:

result:

ok 1 number(s): "195053"

Test #8:

score: 30

Accepted

time: 7ms

memory: 8456kb

input:

1
200000
1 1 2 2 2 4 4 4 6 10 9 10 11 12 13 15 15 18 19 19 19 20 20 22 23 23 23 24 26 27 28 28 29 34 31 35 33 37 35 40 37 39 43 43 43 46 46 48 48 50 48 52 49 50 53 54 54 56 57 56 61 60 59 60 61 65 64 64 65 69 70 72 73 74 72 73 75 78 76 77 80 79 80 81 81 82 86 84 87 90 88 91 93 93 94 94 94 97 95 100 ...

output:

result:

ok 1 number(s): "127754"

Test #9:

score: 30

Accepted

time: 7ms

memory: 8460kb

input:

1
200000
1 2 3 4 1 3 4 4 4 1 3 2 3 3 3 5 2 1 4 5 4 3 5 3 3 2 2 1 1 2 4 2 4 3 3 1 1 2 4 5 5 5 5 2 1 5 3 4 1 5 2 3 4 5 2 3 3 3 1 2 4 2 2 1 1 2 4 1 3 4 1 4 3 4 4 2 1 4 4 5 1 2 1 1 3 2 4 3 3 3 1 2 3 4 3 1 5 5 2 3 2 2 4 2 2 5 2 2 3 5 1 2 2 1 5 5 3 4 2 1 2 5 3 4 5 5 4 5 1 5 3 3 4 3 5 5 4 2 5 5 2 2 3 3 4 2...

output:

result:

ok 1 number(s): "10"

Test #10:

score: 30

Accepted

time: 10ms

memory: 10272kb

input:

1
200000
1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30 31 31 32 32 33 33 34 34 35 35 36 36 37 37 38 38 39 39 40 40 41 41 42 42 43 43 44 44 45 45 46 46 47 47 48 48 49 49 50 50 51 51 52 ...

output:

result:

ok 1 number(s): "66"

Test #11:

score: 30

Accepted

time: 11ms

memory: 10588kb

input:

1
200000
1 2 2 1 5 3 2 7 4 1 5 10 2 3 15 16 13 1 12 13 19 13 19 16 23 9 10 1 23 26 30 7 25 16 25 36 16 27 10 39 40 20 6 5 30 3 46 41 35 30 24 28 28 8 38 25 32 38 29 21 56 17 24 38 5 7 62 58 13 8 11 45 47 55 55 12 64 8 55 7 5 31 73 20 85 83 44 74 58 65 57 66 27 47 66 56 90 39 96 15 37 14 30 61 96 73 ...

output:

result:

ok 1 number(s): "8192"

Test #12:

score: 30

Accepted

time: 7ms

memory: 12636kb

input:

1
200000
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 25 62 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100...

output:

result:

ok 1 number(s): "199948"

Subtask #4:

score: 50

Accepted

Dependency #1:

100%

Accepted

Dependency #2:

100%

Accepted

Dependency #3:

100%

Accepted

Test #13:

score: 50

Accepted

time: 103ms

memory: 26360kb

input:

13
397
1 2 3 1 4 4 6 2 8 10 11 12 13 5 14 16 17 18 19 20 17 21 7 23 25 26 18 16 22 11 27 18 28 32 35 36 17 37 39 40 28 17 41 23 44 16 13 13 46 50 51 16 16 52 55 56 21 57 59 38 28 9 18 60 65 22 66 68 69 70 71 72 73 9 74 76 77 78 79 80 81 25 82 84 25 85 87 88 51 89 91 87 92 94 95 42 96 98 59 99 101 10...

output:

result:

ok 1 number(s): "523799"

Test #14:

score: 50

Accepted

time: 100ms

memory: 27104kb

input:

1
2000000
1 1 2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 5 21 23 24 25 26 27 28 29 30 31 32 33 19 34 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 44 62 64 65 63 66 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 14 20 88 91 92 93 94 95 96 97 98 99 100...

output:

result:

ok 1 number(s): "1949728"

Test #15:

score: 50

Accepted

time: 102ms

memory: 27080kb

input:

1
2000000
1 2 1 4 3 4 5 6 6 10 11 8 9 10 11 13 16 15 18 16 19 19 22 20 23 23 24 28 28 30 29 28 30 33 33 35 33 34 37 36 37 39 41 42 41 44 44 47 45 47 50 49 49 52 53 52 54 55 56 60 60 60 60 62 64 63 64 68 66 67 70 70 71 72 73 74 76 74 79 79 78 82 80 80 83 86 84 86 85 87 88 90 91 93 94 93 94 95 96 97 9...

output:

result:

ok 1 number(s): "1283040"

Test #16:

score: 50

Accepted

time: 93ms

memory: 27096kb

input:

1
2000000
1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30 31 31 32 32 33 33 34 34 35 35 36 36 37 37 38 38 39 39 40 40 41 41 42 42 43 43 44 44 45 45 46 46 47 47 48 48 49 49 50 50 51 51 52...

output:

result:

ok 1 number(s): "93"

Test #17:

score: 50

Accepted

time: 109ms

memory: 27020kb

input:

1
2000000
1 2 1 4 3 4 1 3 5 6 4 8 3 5 9 14 14 3 5 3 5 22 1 6 22 14 26 13 13 5 4 24 32 14 13 30 3 14 4 21 30 15 5 33 27 35 19 19 39 14 42 21 11 19 15 1 52 5 56 45 10 60 5 42 40 31 11 38 63 18 51 63 49 70 54 11 24 31 58 49 24 12 33 39 2 34 59 69 85 18 10 25 37 56 93 84 40 1 80 38 53 48 33 51 96 76 13 ...

output:

result:

ok 1 number(s): "16384"

Test #18:

score: 50

Accepted

time: 56ms

memory: 27068kb

input:

1
2000000
1 1 3 4 5 1 4 1 2 3 1 1 2 5 4 5 5 3 5 3 3 1 2 5 5 4 2 4 5 1 4 1 3 4 5 2 3 2 5 1 5 3 2 4 4 4 1 4 2 4 3 2 5 3 5 1 4 3 2 4 4 1 3 4 3 4 3 5 5 1 4 1 4 5 5 1 2 3 1 3 3 5 2 5 4 5 2 5 3 4 3 1 4 4 3 3 2 5 1 5 1 4 2 2 5 3 4 1 4 4 4 5 1 3 4 4 5 1 5 4 2 1 2 3 4 1 3 4 2 4 1 3 1 5 4 4 3 5 2 2 1 1 5 3 4 ...

output:

result:

ok 1 number(s): "8"

Test #19:

score: 50

Accepted

time: 99ms

memory: 27032kb

input:

1
2000000
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 10...

output:

result:

ok 1 number(s): "1999540"

Test #20:

score: 50

Accepted

time: 111ms

memory: 27024kb

input:

1
2000000
1 2 2 1 5 5 2 7 1 10 9 10 3 7 8 9 1 5 6 19 15 22 16 20 3 17 25 18 24 18 26 14 32 4 18 30 25 16 6 28 41 15 3 41 32 27 7 47 14 19 36 14 24 32 10 20 24 34 25 56 34 46 21 41 63 57 46 58 64 20 3 32 59 45 5 47 16 31 24 26 34 35 69 41 66 69 55 81 63 10 17 1 87 52 46 25 56 7 49 57 88 8 83 67 101 6...

output:

result:

ok 1 number(s): "245760"