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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#310098#8134. LCA Countingucup-team484#TL 9ms27344kbC++171.1kb2024-01-21 01:59:002024-01-21 01:59:00

Judging History

你现在查看的是最新测评结果

  • [2024-01-21 01:59:00]
  • 评测
  • 测评结果:TL
  • 用时:9ms
  • 内存:27344kb
  • [2024-01-21 01:59:00]
  • 提交

answer

#include <bits/stdc++.h>
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()
#define st first
#define nd second
using namespace std;
typedef long long ll;
const int mod = 1e9 + 7;
const int N = 1e6 + 5;
vector<int> adj[N];

int main() {
	ios_base::sync_with_stdio(false); cin.tie(0);
	int n; cin >> n;
	for (int i = 1, p; i < n; i++) {
		cin >> p;
		p--;
		adj[p].push_back(i);
	}
	vector<vector<int>> dp(n);
	for (int i = n - 1; i >= 0; i--) {
		dp[i] = {0};
		if (adj[i].empty()) {
			dp[i].push_back(1);
			continue;
		}
		vector<array<int, 2>> a(1);
		a[0] = {0, 0};
		for (int j: adj[i]) {
			vector<array<int, 2>> nx(size(a) + size(dp[j]) - 1);
			for (int k = 0; k < size(a); k++)
				for (int kk = 0; kk < size(dp[j]); kk++)
					for (int l = 0; l < 2; l++)
						nx[k + kk][l | (k > 0 && kk > 0)] = max(nx[k + kk][l | (k > 0 && kk > 0)], a[k][l] + dp[j][kk] + (l == 0 && k > 0 && kk > 0));
			swap(a, nx);
		}
		dp[i].resize(size(a));
		for (int k = 0; k < size(a); k++)
			dp[i][k] = max(a[k][0], a[k][1]);
	}
	for (int i = 1; i < size(dp[0]); i++)
		cout << dp[0][i] << " ";
	cout << "\n";
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 27060kb

input:

7
1 1 2 4 2 2

output:

1 3 5 6 

result:

ok 4 number(s): "1 3 5 6"

Test #2:

score: 0
Accepted
time: 0ms
memory: 27064kb

input:

10
1 1 2 2 1 1 1 2 4

output:

1 3 5 6 7 8 9 

result:

ok 7 numbers

Test #3:

score: 0
Accepted
time: 0ms
memory: 26908kb

input:

10
1 2 2 4 5 6 1 2 4

output:

1 3 5 7 8 

result:

ok 5 number(s): "1 3 5 7 8"

Test #4:

score: 0
Accepted
time: 3ms
memory: 27224kb

input:

10
1 2 3 3 3 5 6 4 9

output:

1 3 4 

result:

ok 3 number(s): "1 3 4"

Test #5:

score: 0
Accepted
time: 3ms
memory: 27216kb

input:

1000
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 4 1 2 2 1 1 1 1 2 1 1 1 1 2 2 1 1 1 1 1 6 3 1 1 1 2 2 1 1 2 1 2 1 3 1 2 1 1 2 1 1 1 1 1 1 1 4 1 5 1 1 1 1 1 2 1 1 2 1 2 1 2 5 3 1 3 1 1 2 1 2 1 1 3 2 1 6 2 1 2 5 1 1 1 3 2 1 2 1 1 1 1 1...

output:

1 3 5 7 8 10 11 13 14 16 17 19 20 22 23 25 26 28 29 31 32 34 35 37 38 40 41 43 44 46 47 49 50 52 53 55 56 58 59 61 62 64 65 67 68 70 71 73 74 76 77 79 80 82 83 85 86 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 12...

result:

ok 962 numbers

Test #6:

score: 0
Accepted
time: 9ms
memory: 27044kb

input:

1000
1 1 1 1 1 1 1 2 2 1 2 3 1 1 1 2 2 1 1 1 2 1 2 3 8 2 2 2 8 1 6 3 1 1 1 4 2 14 8 2 1 1 1 3 1 4 1 1 3 11 1 1 2 2 3 2 5 5 6 5 3 3 10 5 3 1 9 14 3 19 4 15 4 3 3 10 3 10 5 1 2 12 7 13 3 9 6 19 9 6 4 3 5 28 10 16 8 12 39 1 11 12 2 2 10 15 5 28 10 4 4 5 5 18 15 15 11 5 25 7 2 10 1 24 8 15 14 11 38 9 9 ...

output:

1 3 5 7 9 11 13 15 17 19 21 23 25 27 28 30 32 34 36 37 39 41 43 44 46 48 50 51 53 55 57 58 60 62 64 65 67 69 71 72 74 76 78 79 81 83 85 86 88 90 92 93 95 97 99 100 102 104 105 107 109 110 112 114 115 117 119 120 122 124 125 127 129 130 132 133 135 136 138 139 141 142 144 145 147 148 150 151 153 154 ...

result:

ok 822 numbers

Test #7:

score: 0
Accepted
time: 4ms
memory: 27324kb

input:

1000
1 2 2 2 1 4 3 6 7 5 8 8 1 12 12 16 4 16 18 3 17 22 7 22 9 17 21 16 16 18 29 31 12 29 32 36 22 31 32 14 15 13 8 1 36 19 33 2 10 28 29 1 53 27 15 56 34 57 21 15 58 36 57 57 16 45 16 51 44 18 31 52 53 34 65 30 51 8 59 72 53 49 49 35 31 23 3 19 69 5 16 11 45 12 62 23 46 5 24 61 63 81 1 85 73 53 84 ...

output:

1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 101 103 105 107 109 111 113 115 117 119 121 123 125 127 129 131 133 135 137 139 141 143 145 147 149 151 153 155 157 159 161 163 165 167 169 171 173 175 177...

result:

ok 487 numbers

Test #8:

score: 0
Accepted
time: 4ms
memory: 27344kb

input:

1000
1 2 3 4 5 6 7 7 8 9 11 12 13 14 14 15 17 15 17 20 19 22 22 23 24 25 22 26 23 30 29 32 32 33 33 34 30 35 39 21 41 28 42 42 44 44 38 48 49 50 51 52 44 51 44 53 36 52 59 48 55 62 63 54 65 59 54 67 60 65 68 71 71 74 58 73 65 78 76 70 77 82 80 57 85 81 86 80 79 81 78 88 88 86 61 93 88 96 98 100 96 9...

output:

1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 101 103 105 107 109 111 113 115 117 119 121 123 125 127 129 131 133 135 137 139 141 143 145 147 149 151 153 155 157 159 161 163 165 167 169 171 173 175 177...

result:

ok 374 numbers

Test #9:

score: 0
Accepted
time: 4ms
memory: 27324kb

input:

1000
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 36 38 39 40 41 42 42 44 45 46 47 48 49 50 51 52 53 54 54 56 57 58 59 60 61 62 62 62 65 66 66 68 69 70 71 72 73 73 75 75 76 78 78 80 79 80 83 83 85 86 86 88 88 90 91 91 92 94 94 96 97 98 95 97 100 ...

output:

1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 101 103 105 107 109 111 113 115 117 119 121 123 125 127 129 131 133 135 137 139 141 143 145 147 149 151 153 155 157 159 161 163 165 167 169 171 173 175 177...

result:

ok 319 numbers

Test #10:

score: -100
Time Limit Exceeded

input:

200000
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1 2 1 1 2 1 1 1 1 1 1 1 1 3 1 2 2 1 6 1 1 2 1 3 1 1 1 1 1 2 2 1 2 1 1 1 2 5 1 2 1 1 1 1 1 1 2 3 2 1 1 1 1 1 2 1 1 2 1 2 1 2 1 1 1 3 4 2 1 3 2 2 1 1 3 1 2 1 2 4 3 2 3 1 1 2 1 5 1 3...

output:


result: