Submission #1043217

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1043217	2024-08-04T04:58:24 Z	juicy	Monochrome Points (JOI20_monochrome)	C++17	100 / 100	961 ms	7844 KB

monochrome

// sorry didnt tryin to prove:(

#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif

const int N = 2e5 + 5;

int n;
int ft[2 * N];
string s;
vector<int> W, B;

void upd(int i, int x) {
  for (; i <= 2 * n; i += i & -i) {
    ft[i] += x;
  }
}

int qry(int i) {
  int res = 0;
  for (; i; i -= i & -i) {
    res += ft[i];
  }
  return res;
}

int qry(int l, int r) {
  return qry(r) - qry(l - 1);
}

long long get(int k) {
  long long res = 0;
  vector<array<int, 2>> cands;
  for (int i = 0; i < n; ++i) {
    int a = W[i], b = B[(i + k) % n];
    cands.push_back({min(a, b), max(a, b)});
  }
  sort(cands.begin(), cands.end());
  fill(ft + 1, ft + 2 * n + 1, 0);
  for (auto [l, r] : cands) {
    res += qry(l, r);
    upd(r, 1);
  }
  return res;
}

int main() {
  ios::sync_with_stdio(false); cin.tie(nullptr);

  cin >> n;
  for (int i = 1; i <= 2 * n; ++i) {
    char c; cin >> c;
    (c == 'W' ? W : B).push_back(i);
  }
  int l = 1, r = n, p = 0;
  while (l <= r) {
    int md = (l + r) / 2;
    if (get(md - 1) <= get(md)) {
      p = md;
      l = md + 1;
    } else {
      r = md - 1;
    }
  }
  cout << get(p);
  return 0;
}

Subtask #1
4.0 / 4.0

#	Verdict	Memory	Grader output
1	Correct	348 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	464 KB	Output is correct
4	Correct	348 KB	Output is correct
5	Correct	348 KB	Output is correct
6	Correct	348 KB	Output is correct
7	Correct	348 KB	Output is correct
8	Correct	348 KB	Output is correct
9	Correct	348 KB	Output is correct
10	Correct	348 KB	Output is correct
11	Correct	348 KB	Output is correct
12	Correct	348 KB	Output is correct
13	Correct	348 KB	Output is correct

Subtask #2
21.0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	464 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	424 KB	Output is correct
23	Correct	0 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	464 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	0 ms	348 KB	Output is correct
32	Correct	1 ms	352 KB	Output is correct
33	Correct	1 ms	348 KB	Output is correct

Subtask #3
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	464 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	424 KB	Output is correct
23	Correct	0 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	464 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	0 ms	348 KB	Output is correct
32	Correct	1 ms	352 KB	Output is correct
33	Correct	1 ms	348 KB	Output is correct
34	Correct	3 ms	348 KB	Output is correct
35	Correct	3 ms	348 KB	Output is correct
36	Correct	3 ms	352 KB	Output is correct
37	Correct	4 ms	348 KB	Output is correct
38	Correct	2 ms	344 KB	Output is correct
39	Correct	3 ms	608 KB	Output is correct
40	Correct	2 ms	348 KB	Output is correct
41	Correct	2 ms	352 KB	Output is correct
42	Correct	3 ms	348 KB	Output is correct
43	Correct	3 ms	464 KB	Output is correct
44	Correct	3 ms	348 KB	Output is correct
45	Correct	3 ms	348 KB	Output is correct
46	Correct	3 ms	348 KB	Output is correct
47	Correct	2 ms	348 KB	Output is correct
48	Correct	2 ms	348 KB	Output is correct
49	Correct	3 ms	348 KB	Output is correct
50	Correct	3 ms	348 KB	Output is correct
51	Correct	1 ms	532 KB	Output is correct
52	Correct	3 ms	532 KB	Output is correct

Subtask #4
65.0 / 65.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	464 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	424 KB	Output is correct
23	Correct	0 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	464 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	0 ms	348 KB	Output is correct
32	Correct	1 ms	352 KB	Output is correct
33	Correct	1 ms	348 KB	Output is correct
34	Correct	3 ms	348 KB	Output is correct
35	Correct	3 ms	348 KB	Output is correct
36	Correct	3 ms	352 KB	Output is correct
37	Correct	4 ms	348 KB	Output is correct
38	Correct	2 ms	344 KB	Output is correct
39	Correct	3 ms	608 KB	Output is correct
40	Correct	2 ms	348 KB	Output is correct
41	Correct	2 ms	352 KB	Output is correct
42	Correct	3 ms	348 KB	Output is correct
43	Correct	3 ms	464 KB	Output is correct
44	Correct	3 ms	348 KB	Output is correct
45	Correct	3 ms	348 KB	Output is correct
46	Correct	3 ms	348 KB	Output is correct
47	Correct	2 ms	348 KB	Output is correct
48	Correct	2 ms	348 KB	Output is correct
49	Correct	3 ms	348 KB	Output is correct
50	Correct	3 ms	348 KB	Output is correct
51	Correct	1 ms	532 KB	Output is correct
52	Correct	3 ms	532 KB	Output is correct
53	Correct	860 ms	7712 KB	Output is correct
54	Correct	921 ms	7604 KB	Output is correct
55	Correct	776 ms	7360 KB	Output is correct
56	Correct	792 ms	7412 KB	Output is correct
57	Correct	596 ms	7476 KB	Output is correct
58	Correct	614 ms	7576 KB	Output is correct
59	Correct	637 ms	7388 KB	Output is correct
60	Correct	654 ms	7416 KB	Output is correct
61	Correct	764 ms	7464 KB	Output is correct
62	Correct	682 ms	7464 KB	Output is correct
63	Correct	837 ms	7704 KB	Output is correct
64	Correct	613 ms	7432 KB	Output is correct
65	Correct	807 ms	7184 KB	Output is correct
66	Correct	704 ms	7332 KB	Output is correct
67	Correct	712 ms	7352 KB	Output is correct
68	Correct	566 ms	7124 KB	Output is correct
69	Correct	567 ms	7572 KB	Output is correct
70	Correct	634 ms	7156 KB	Output is correct
71	Correct	806 ms	7796 KB	Output is correct
72	Correct	450 ms	7620 KB	Output is correct
73	Correct	961 ms	7844 KB	Output is correct

Submission #1043217

Compilation message

Subtask #1 4.0 / 4.0

Subtask #2 21.0 / 21.0

Subtask #3 10.0 / 10.0

Subtask #4 65.0 / 65.0

Subtask #1
4.0 / 4.0

Subtask #2
21.0 / 21.0

Subtask #3
10.0 / 10.0

Subtask #4
65.0 / 65.0