QOJ.ac

QOJ

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
#647172#7434. 冷たい部屋、一人guosounWA 5ms5228kbC++173.1kb2024-10-17 12:21:002024-10-17 12:21:01

Judging History

你现在查看的是最新测评结果

  • [2024-10-17 12:21:01]
  • 评测
  • 测评结果:WA
  • 用时:5ms
  • 内存:5228kb
  • [2024-10-17 12:21:00]
  • 提交

answer

#include <bits/stdc++.h>
using ll = long long;

template <int B>
struct array {
  std::vector<int> a, b;
  array(int n) : a(n), b((n - 1) / B + 1) {}
  void add(int x) { a[x] += 1, b[x / B] += 1; }
  int query(int x) {
    int ret = 0;
    for (int i = x; i / B == x / B && i < (int)a.size(); i++) ret += a[i];
    for (int i = x / B + 1; i < (int)b.size(); i++) ret += b[i];
    return ret;
  }
};

struct list {
  ll ans;
  std::vector<int> f;
  std::vector<std::pair<int*, int>> st1;
  std::vector<ll> st2;
  
  list(int n) : ans(0), f(n) { std::iota(f.begin(), f.end(), 0); }
  std::tuple<int, int, int, int> link(int i) {
    int s = f[i], t = f[i + 1];
    st2.emplace_back(ans);
    ans += (ll)(i - s + 1) * (t - i + 1);
    st1.emplace_back(&f[s], f[s]), st1.emplace_back(&f[t], f[t]);
    f[s] = t, f[t] = s;
    return {s, i, i + 1, t};
  }
  void undo() {
    *st1.back().first = st1.back().second, st1.pop_back();
    *st1.back().first = st1.back().second, st1.pop_back();
    ans = st2.back(), st2.pop_back();
  }
};

template<class T, class cmp>
struct rmq {
  int n;
  std::vector<T> a;
  std::array<std::vector<T>, 20> bl;
  rmq(std::vector<T> v) {
    n = v.size(), a = v;
    bl.fill(std::vector<T>(n));
    for (int i = 0; i < n; i++) bl[0][i] = a[i];
    for (int i = 1; i < 20; i++) 
      for (int j = 0; j + (1 << i) - 1 < n; j++)
        bl[i][j] = std::min(bl[i - 1][j], bl[i - 1][j + (1 << (i - 1))], cmp());
  }
  T query(int l, int r) {
    int k = std::__lg(r - l + 1);
    return std::min(bl[k][l], bl[k][r - (1 << k) + 1], cmp());
  }
};

int main() {
  const int B = 320;
  std::cin.tie(0)->sync_with_stdio(0);
  int n, m;
  std::cin >> n >> m;
  std::vector<int> a(n + 1), b(n + 1);
  std::vector<std::vector<int>> pos(n + 1);
  std::vector<std::tuple<int, int, ll*>> q(m);
  std::vector<ll> ans;
  ans.reserve(m);
  for (int i = 1; i <= n; i++) std::cin >> a[i], pos[a[i]].emplace_back(i);
  for (int i = 1; i <= n; i++) std::cin >> b[i];
  for (auto &[l, r, it] : q) {
    std::cin >> l >> r;
    ans.push_back(0);
    it = &ans.back();
  }
  rmq<int, std::less<int>> bmn(b);
  rmq<int, std::greater<int>> bmx(b);
  std::vector<std::pair<int, int>> e;
  for (int i = 1; i < n; i++) e.emplace_back(std::max(b[i], b[i + 1]), i);
  std::sort(e.begin(), e.end());
  std::sort(q.begin(), q.end(), [](auto x, auto y) {
    return std::get<1>(x) < std::get<1>(y);
  });
  auto it = q.begin();
  list l(n + 1);
  array<400> cnt(n + 1);

  for (auto [v, i] : e) {
    while (it != q.end() && std::get<1>(*it) < v)  {
      *std::get<2>(*it) += cnt.query(std::get<0>(*it)), it++;
    }
    auto [l1, r1, l2, r2] = l.link(i);
    if (r1 - l1 > r2 - l2) std::swap(l1, l2), std::swap(r1, r2);
    for (int i = l1; i <= r1; i++) {
      if (pos[a[i]].size() > B) continue;
      for (int j : pos[a[i]])
        if (l2 <= j && j <= r2) cnt.add(bmn.query(std::min(i, j), std::max(i, j)));
    }
  }
  while (it != q.end()) {
    *std::get<2>(*it) += cnt.query(std::get<0>(*it)), it++;
  }
  for (int i = 0; i < m; i++) std::cout << ans[i] << '\n';
  
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3656kb

input:

100 100
4 1 5 1 2 1 7 5 3 7 2 3 6 6 5 3 2 2 4 1 6 5 6 2 2 2 7 6 1 3 6 3 5 6 7 6 1 2 3 3 4 2 1 1 5 4 4 3 6 7 1 1 6 1 5 6 2 3 7 4 2 4 6 7 7 3 5 3 7 2 3 3 5 1 4 7 1 2 2 5 2 2 4 3 4 7 2 7 7 3 7 3 6 6 5 4 5 4 7 6
93 52 12 70 25 36 18 37 27 99 68 40 84 3 76 57 60 19 33 41 92 87 58 13 15 43 28 63 64 59 31 ...

output:

1
0
13
71
1
1
3
7
0
0
2
1
3
20
12
6
61
24
1
0
0
2
3
19
0
0
6
2
0
0
4
1
135
0
19
1
1
29
14
39
1
0
1
7
7
0
12
3
0
1
0
1
1
5
0
28
14
19
2
1
0
0
6
5
0
0
2
7
5
1
2
2
0
1
11
1
0
1
0
10
0
0
5
1
33
1
17
2
1
22
20
1
2
0
0
16
0
1
1
15

result:

ok 100 numbers

Test #2:

score: 0
Accepted
time: 0ms
memory: 3696kb

input:

100 100
8 8 2 8 8 12 11 8 5 5 5 1 7 6 6 11 3 13 1 12 2 2 4 1 11 13 10 7 1 2 4 3 1 12 1 5 13 8 1 5 12 5 12 4 6 3 5 4 8 3 4 1 4 3 9 2 11 9 4 8 12 3 5 13 13 1 9 12 2 13 8 13 4 13 12 5 12 13 2 6 4 4 1 6 6 9 12 7 4 3 10 7 1 7 7 10 4 12 3 9
96 87 12 73 74 78 99 76 7 77 54 88 90 86 95 94 31 83 27 11 66 91 ...

output:

0
6
2
0
0
1
16
1
1
10
7
9
2
8
2
1
3
5
0
7
2
0
2
0
1
0
7
0
0
1
108
0
0
0
6
4
1
0
2
13
0
3
0
10
0
0
1
21
0
18
0
11
0
8
13
9
0
0
0
11
12
2
1
0
2
16
1
7
0
16
0
2
3
7
0
2
10
1
4
2
6
0
0
6
3
0
0
0
5
7
0
0
6
0
7
0
4
0
3
0

result:

ok 100 numbers

Test #3:

score: 0
Accepted
time: 0ms
memory: 3540kb

input:

100 100
13 4 2 1 1 2 1 39 20 1 1 1 33 1 1 1 9 37 21 7 14 58 1 3 19 29 40 56 2 1 3 1 42 1 1 13 1 3 5 4 49 1 1 8 8 3 1 14 1 1 2 6 17 3 2 2 2 9 3 1 17 90 1 1 1 1 8 14 17 16 1 33 15 20 46 22 2 20 11 1 28 3 1 4 1 17 3 9 10 2 1 2 2 6 1 1 3 17 27 2
86 82 24 49 50 32 63 20 53 11 60 1 16 27 15 14 12 88 52 17...

output:

1
84
13
0
7
4
26
1
9
1
7
3
10
0
7
3
6
4
4
0
13
1
0
4
4
0
40
22
36
0
5
6
0
37
28
213
1
6
10
4
0
3
5
0
3
5
25
2
0
1
3
12
1
39
0
8
4
2
6
0
6
4
23
17
0
0
4
13
6
6
0
0
6
10
11
30
0
7
10
10
101
0
1
0
62
0
10
100
26
4
5
1
24
0
1
4
15
3
0
6

result:

ok 100 numbers

Test #4:

score: 0
Accepted
time: 0ms
memory: 3820kb

input:

100 100
1 1 1 1 1 36 58 18 15 1 1 2 1 1 1 1 4 10 9 2 2 4 28 1 2 1 2 2 28 27 12 6 3 10 1 1 2 1 1 2 7 40 1 4 8 17 16 3 5 1 2 2 16 5 6 1 5 3 4 11 1 1 11 51 11 4 3 7 14 16 1 11 1 2 8 3 4 1 1 3 2 5 21 7 3 10 2 2 1 20 23 1 3 6 1 1 15 3 34 1
8 1 2 3 92 48 11 43 9 71 69 5 6 7 12 26 31 45 80 83 14 16 17 25 2...

output:

29
1
9
19
6
1
3
2
0
16
15
2
11
14
24
191
25
21
33
34
19
2
0
0
11
32
1
9
2
16
24
28
9
0
123
4
6
0
13
69
271
15
47
6
0
121
0
1
15
1
9
61
0
63
10
2
2
13
55
25
12
2
40
4
3
39
14
15
0
15
2
48
6
0
0
6
0
5
0
11
3
1
78
9
12
0
0
14
15
38
7
3
0
12
10
0
1
6
0
22

result:

ok 100 numbers

Test #5:

score: 0
Accepted
time: 0ms
memory: 3648kb

input:

100 100
1 15 6 12 6 13 8 8 3 5 14 5 7 13 8 1 1 3 8 5 4 7 9 1 1 7 4 14 7 5 4 6 7 5 11 6 4 14 8 11 12 9 12 14 10 12 9 14 14 11 12 12 11 8 5 11 10 6 13 5 6 4 6 15 10 2 13 12 7 15 9 14 15 1 9 9 8 4 5 2 2 5 13 14 12 5 9 13 7 12 1 1 1 7 10 5 11 4 4 6
17 65 39 50 77 97 44 15 72 11 8 59 74 14 1 3 5 68 21 4 ...

output:

24
5
0
4
0
1
0
0
2
0
2
11
0
13
12
3
19
0
0
0
5
1
0
0
14
0
9
0
1
22
7
25
44
0
7
0
0
3
27
1
0
0
8
3
0
0
2
2
18
26
63
15
2
28
0
1
8
10
18
19
4
0
0
5
0
0
3
15
5
63
5
8
29
0
14
8
7
2
3
1
1
1
2
1
6
8
0
0
19
0
20
0
3
11
0
4
6
5
55
0

result:

ok 100 numbers

Test #6:

score: 0
Accepted
time: 3ms
memory: 4784kb

input:

5000 5000
2 29 12 10 25 32 45 18 16 38 41 50 8 32 54 37 18 29 37 42 9 38 25 43 35 5 47 20 32 35 8 14 8 37 30 16 45 19 14 33 14 31 31 33 28 12 11 49 32 6 11 4 50 39 3 55 25 26 13 40 41 44 31 31 18 19 25 18 29 19 21 1 52 19 2 53 39 55 11 27 54 22 16 49 12 23 41 22 34 38 40 20 5 35 43 40 29 14 20 40 6 ...

output:

21908
618
65611
229
7839
55433
12508
4205
5
12239
31375
1958
20
2290
29810
13020
12234
5752
14318
13451
122
0
109
3852
26843
12709
11522
14307
45468
886
5020
6667
21808
3367
637
593
37
5078
2698
61
364
20500
88231
2311
39
2487
18627
3425
194
4845
54212
84095
14695
8
67509
4364
312
23989
3876
86722
1...

result:

ok 5000 numbers

Test #7:

score: 0
Accepted
time: 5ms
memory: 4808kb

input:

5000 5000
15 86 121 63 26 26 74 43 35 32 48 131 61 120 103 48 101 1 70 97 130 105 30 38 68 141 85 141 108 17 143 106 47 90 4 68 63 8 79 26 10 66 48 61 18 75 62 84 80 113 20 27 109 102 32 13 20 63 12 53 112 146 33 27 49 110 55 132 121 67 75 18 38 80 140 62 7 20 104 4 42 91 67 20 127 77 13 141 64 3 28...

output:

0
132
8
26
0
32
1
61
40
0
0
0
0
18
49
15
0
14
2
63
24
9
10
94
10
21
1
2
1
6
17
21
1
83
19
9
0
21
67
8
13
0
0
0
13
1
0
21
0
13
1
123
0
0
8
0
0
10
14
2
32
2
8
53
29
0
23
6
6
0
0
13
0
1
0
3
0
0
1
0
5
15
15
0
4
4
1
0
1
0
0
2
1
0
0
0
0
1
2
1
11
23
45
1
0
9
14
104
60
8
3
1
2
38
34
32
1
0
0
38
27
18
62
0
5...

result:

ok 5000 numbers

Test #8:

score: -100
Wrong Answer
time: 5ms
memory: 5228kb

input:

5000 5000
342 3 498 1667 87 63 8 215 1 25 67 5 7 600 1 1 51 14 6 1990 7 2707 105 637 5 805 328 74 1 57 316 236 6 1 1 700 965 2 493 21 12 2 1 1626 1 1352 11 109 1 2253 70 4 788 55 140 1 2 1 57 21 1 530 3060 62 266 86 32 1861 1 173 2 2 234 1 402 1392 101 9 7 1 8 3 8 137 46 4 17 212 1 4 10 6 1389 200 4...

output:

9144
119
98
40
390
419
79
2107
25
3866
256
23
639
54315
452
489
112
80
457
9046
122
34888
38455
165
8776
15
16
39000
508
8304
888
2167
133
1345
3
48
4048
1
16991
0
672
130
31750
3
54
8458
38420
39933
37798
1927
11
38697
215
31749
2
69
88
9485
38258
63798
35
38398
139
454
76
381
510
187
3405
1214
956...

result:

wrong answer 1st numbers differ - expected: '31295', found: '9144'