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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#267213#7685. Barkley IIwxhtzdyTL 946ms214456kbC++202.1kb2023-11-27 02:20:112023-11-27 02:20:12

Judging History

你现在查看的是最新测评结果

  • [2023-11-27 02:20:12]
  • 评测
  • 测评结果：TL
  • 用时：946ms
  • 内存：214456kb
查看
  • [2023-11-27 02:20:11]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;

const int N = 500005;
const int MAX = 40 * N;

int root[N], ls[MAX], rs[MAX], sum[MAX], tsz;

void Modify(int& x, int f, int l, int r, int p, int v) {
  x = ++tsz;
  ls[x] = ls[f];
  rs[x] = rs[f];
  sum[x] = sum[f] + v;
  if (l == r) {
    return;
  }
  int mid = l + r >> 1;
  if (p <= mid) {
    Modify(ls[x], ls[f], l, mid, p, v);
  } else {
    Modify(rs[x], rs[f], mid + 1, r, p, v);
  }
}

int Query(int x, int f, int l, int r, int ql, int qr) {
  if (ql <= l && r <= qr) {
    return sum[x] - sum[f];
  }
  int mid = l + r >> 1;
  if (qr <= mid) {
    return Query(ls[x], ls[f], l, mid, ql, qr);
  } else if (ql > mid) {
    return Query(rs[x], rs[f], mid + 1, r, ql, qr);
  } else {
    return Query(ls[x], ls[f], l, mid, ql, qr) + Query(rs[x], rs[f], mid + 1, r, ql, qr);
  }
}

void clear_seg() {
  while (tsz) {
    ls[tsz] = 0;
    rs[tsz] = 0;
    sum[tsz] = 0;
    tsz--;
  }
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int tt;
  cin >> tt;
  while (tt--) {
    int n, m;
    cin >> n >> m;
    vector<int> a(n);
    for (int i = 0; i < n; i++) {
      cin >> a[i];
      --a[i];
    }
    vector<vector<int>> pos(m);
    for (int i = 0; i < n; i++) {
      pos[a[i]].push_back(i);
    }
    clear_seg();
    map<int, int> lst;
    for (int i = 0; i < n; i++) {
      if (i > 0) {
        root[i] = root[i - 1];
      } else {
        root[i] = 0;
      }
      Modify(root[i], root[i], 0, n - 1, i, 1);
      if (lst.count(a[i])) {
        Modify(root[i], root[i], 0, n - 1, lst[a[i]], -1);
      }
      lst[a[i]] = i;
    }
    int ans = -1;
    for (int v = 0; v < m; v++) {
      pos[v].push_back(-1);
      pos[v].push_back(n);
      sort(pos[v].begin(), pos[v].end());
      int sz = (int) pos[v].size();
      for (int j = 0; j + 1 < sz; j++) {
        int L = pos[v][j] + 1;
        int R = pos[v][j + 1] - 1;
        ans = max(ans, (L > R ? 0 : Query(root[R], (L == 0 ? 0 : root[L - 1]), 0, n - 1, L, R)) - (v + 1));
      }
    }
    cout << ans << '\n';
  }
  return 0;
}
源文件, 语言: C++20

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 5956kb

input:

2
5 4
1 2 2 3 4
5 10000
5 2 3 4 1

output:

2
3

result:

ok 2 number(s): "2 3"

Test #2:

score: 0
Accepted
time: 110ms
memory: 5552kb

input:

50000
10 19
12 6 1 12 11 15 4 1 13 18
10 8
8 7 6 7 6 2 2 3 4 8
10 6
3 2 6 6 5 2 3 4 5 6
10 11
6 3 7 9 2 1 2 10 10 4
10 6
6 1 2 6 1 1 3 4 2 1
10 9
8 5 3 9 1 7 5 5 1 1
10 5
1 4 3 2 5 4 5 3 5 2
10 14
3 8 12 10 4 2 3 13 7 3
10 14
5 5 12 2 8 1 13 9 8 5
10 7
5 5 6 6 1 5 3 7 3 4
10 7
5 1 4 6 1 6 4 3 7 5
10...

output:

6
5
4
4
2
4
3
7
4
4
4
5
2
3
6
6
7
5
7
6
5
5
6
2
6
8
7
2
5
5
6
2
2
3
4
5
3
3
7
3
2
5
6
1
3
5
3
3
3
8
6
6
5
7
4
4
5
4
6
6
6
3
7
3
6
3
3
7
7
6
6
7
4
3
3
4
4
6
3
4
6
6
4
5
5
9
4
5
7
5
3
5
2
2
5
6
6
8
4
3
4
5
5
5
7
7
3
2
6
5
3
5
4
4
5
6
6
5
6
7
7
4
5
7
4
7
3
7
6
6
6
5
4
2
5
4
2
3
6
5
2
6
5
5
4
3
5
6
6
6
...

result:

ok 50000 numbers

Test #3:

score: 0
Accepted
time: 104ms
memory: 5876kb

input:

100000
5 4
4 3 1 3 1
5 4
2 2 1 3 4
5 9
7 8 7 1 3
5 3
3 2 2 3 1
5 7
1 4 2 4 7
5 4
4 4 4 2 3
5 3
2 1 2 2 2
5 5
2 1 2 5 4
5 9
1 8 4 4 7
5 6
2 6 4 6 2
5 5
1 2 4 4 4
5 3
2 1 1 1 3
5 5
5 4 5 2 5
5 4
3 3 3 2 1
5 3
3 1 3 2 3
5 7
1 5 2 2 7
5 6
2 2 6 5 6
5 10
6 3 3 1 7
5 8
1 6 8 4 3
5 4
1 2 1 3 3
5 7
2 2 4 3 ...

output:

1
1
2
1
2
2
0
2
2
2
1
0
2
1
1
2
2
2
3
0
3
1
2
2
3
3
1
3
0
0
3
2
2
0
2
2
1
0
2
2
3
3
3
1
3
2
2
3
2
3
2
1
2
3
1
3
3
1
2
3
1
1
2
2
2
2
0
1
0
1
0
2
1
3
0
2
2
3
2
2
1
3
1
3
1
1
1
3
1
1
4
0
1
3
2
2
2
0
3
2
4
3
3
2
1
0
4
4
3
2
1
2
1
2
3
2
3
4
4
3
0
0
1
4
1
3
3
2
3
1
3
4
3
1
2
2
3
2
3
2
3
3
1
3
1
1
4
1
1
3
...

result:

ok 100000 numbers

Test #4:

score: 0
Accepted
time: 126ms
memory: 5672kb

input:

25000
20 28
4 28 8 7 8 23 13 27 1 3 24 19 21 7 21 6 10 3 1 8
20 18
6 13 17 2 4 11 12 5 10 8 1 3 5 18 10 2 8 15 4 17
20 17
5 9 5 15 7 11 16 2 16 17 15 11 3 12 13 12 11 17 15 14
20 28
12 17 26 1 21 18 9 12 22 3 7 24 5 8 20 3 25 28 17 20
20 13
9 10 4 9 10 13 4 3 3 9 12 8 4 12 2 2 6 10 13 5
20 22
17 13 ...

output:

12
9
11
14
9
12
9
15
6
11
8
13
14
13
7
11
8
13
11
11
14
14
7
15
10
10
10
12
9
13
12
10
10
14
14
11
9
8
9
10
10
5
11
14
13
14
13
8
8
12
10
10
17
12
7
14
9
11
14
13
8
12
15
13
14
11
9
8
11
17
9
12
11
13
13
10
14
10
10
16
12
13
12
11
14
12
9
12
5
9
15
16
13
15
7
14
12
6
12
13
7
8
12
10
13
15
9
16
7
16
...

result:

ok 25000 numbers

Test #5:

score: 0
Accepted
time: 188ms
memory: 5692kb

input:

5000
100 100
71 48 44 27 73 73 90 42 69 81 79 99 97 3 45 78 38 92 89 27 97 7 4 91 42 59 7 45 88 100 15 66 64 6 26 54 38 38 72 81 15 94 35 63 33 85 100 16 41 5 71 20 92 36 39 59 19 59 11 22 11 26 94 29 73 98 16 16 47 25 35 50 49 6 67 85 69 90 6 87 72 24 37 62 55 54 25 38 95 14 15 26 89 26 25 46 14 24...

output:

59
78
69
48
78
53
64
73
53
66
59
57
62
42
73
69
46
68
66
47
59
64
71
57
73
43
52
66
67
61
66
66
65
58
80
65
65
69
75
76
69
39
69
61
53
72
44
62
63
71
76
56
69
79
49
73
62
71
83
59
70
53
69
73
47
68
74
59
66
74
75
61
53
76
48
62
79
71
47
72
40
80
62
42
63
70
72
70
70
59
68
56
74
54
61
78
68
75
70
39
...

result:

ok 5000 numbers

Test #6:

score: 0
Accepted
time: 776ms
memory: 128000kb

input:

2
250000 144237
103523 38477 80037 110169 8464 110583 60349 74339 29012 8989 96955 23403 38383 12186 107503 109176 1709 31839 109579 62912 130470 26082 102718 25272 17893 55607 48053 34513 23154 136492 8313 136454 57920 60639 68601 50656 16871 101625 88777 35367 62644 80269 24346 33961 74832 62520 8...

output:

118705
195099

result:

ok 2 number(s): "118705 195099"

Test #7:

score: 0
Accepted
time: 946ms
memory: 214456kb

input:

1
500000 500000
166333 42890 491246 340568 331305 268296 201428 53022 200493 362616 82079 492836 402998 214609 161141 471977 378791 107806 182516 265636 468917 104158 490409 221339 116329 325539 49370 262861 37122 78932 236317 431273 76912 177034 393086 455348 481306 290838 435357 444359 465017 1894...

output:

315937

result:

ok 1 number(s): "315937"

Test #8:

score: -100
Time Limit Exceeded

input:

50000
10 359848
3 7 9 4 5 2 8 10 1 6
10 418109
5 3 9 4 8 10 6 2 1 7
10 218272
3 4 6 5 2 1 9 10 8 7
10 35311
10 8 7 3 9 2 1 6 5 4
10 82600
4 10 6 9 7 5 2 1 3 8
10 265069
10 5 3 2 9 4 1 8 7 6
10 105624
7 2 3 1 9 10 5 8 4 6
10 440218
10 5 3 6 9 4 1 8 7 2
10 444968
1 2 4 7 5 10 3 9 8 6
10 199453
7 10 1 ...

output:

result:
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