# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
679040 | 2023-01-07T09:35:43 Z | bashkort | Monochrome Points (JOI20_monochrome) | C++17 | 2000 ms | 4324 KB |
#include <bits/stdc++.h> using namespace std; using ll = long long; struct Fenwick { vector<int> a; int n{}; Fenwick() = default; Fenwick(int n) : n(n), a(n + 1) {} int sum(int i) { int ans = 0; for (int x = i + 1; x > 0; x -= x & -x) { ans += a[x]; } return ans; } void modify(int i, int val) { for (int x = i + 1; x <= n; x += x & -x) { a[x] += val; } } }; ll intersecting(vector<int> &p) { int n = p.size(); Fenwick fn(n); ll ans = 0; for (int i = 0; i < n; ++i) { if (p[i] > i) { ans -= fn.sum(i); continue; } ans += fn.sum(p[i]); fn.modify(p[i], 1); } return ans; } int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int n; cin >> n; string s; cin >> s; ll ans = 0; vector<int> p(2 * n); for (int w = 0; w <= n; ++w) { int b = n - w; queue<int> pos[2]; int left[2]{w, b}; bool yay = true; for (int i = 0; i < 2 * n; ++i) { int tp = s[i] == 'B'; if (left[tp]) { pos[tp].push(i); --left[tp]; } else { if (pos[tp ^ 1].empty()) { yay = false; break; } p[i] = pos[tp ^ 1].front(); p[p[i]] = i; pos[tp ^ 1].pop(); } } if (yay) { ans = max(ans, intersecting(p)); } } cout << ans << '\n'; return 0; }
Compilation message
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 0 ms | 316 KB | Output is correct |
2 | Correct | 0 ms | 212 KB | Output is correct |
3 | Correct | 1 ms | 212 KB | Output is correct |
4 | Correct | 0 ms | 212 KB | Output is correct |
5 | Correct | 1 ms | 212 KB | Output is correct |
6 | Correct | 1 ms | 316 KB | Output is correct |
7 | Correct | 1 ms | 320 KB | Output is correct |
8 | Correct | 0 ms | 320 KB | Output is correct |
9 | Correct | 1 ms | 340 KB | Output is correct |
10 | Correct | 1 ms | 212 KB | Output is correct |
11 | Correct | 1 ms | 212 KB | Output is correct |
12 | Correct | 0 ms | 212 KB | Output is correct |
13 | Correct | 0 ms | 212 KB | Output is correct |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 0 ms | 316 KB | Output is correct |
2 | Correct | 0 ms | 212 KB | Output is correct |
3 | Correct | 1 ms | 212 KB | Output is correct |
4 | Correct | 0 ms | 212 KB | Output is correct |
5 | Correct | 1 ms | 212 KB | Output is correct |
6 | Correct | 1 ms | 316 KB | Output is correct |
7 | Correct | 1 ms | 320 KB | Output is correct |
8 | Correct | 0 ms | 320 KB | Output is correct |
9 | Correct | 1 ms | 340 KB | Output is correct |
10 | Correct | 1 ms | 212 KB | Output is correct |
11 | Correct | 1 ms | 212 KB | Output is correct |
12 | Correct | 0 ms | 212 KB | Output is correct |
13 | Correct | 0 ms | 212 KB | Output is correct |
14 | Correct | 5 ms | 328 KB | Output is correct |
15 | Correct | 4 ms | 324 KB | Output is correct |
16 | Correct | 4 ms | 212 KB | Output is correct |
17 | Correct | 5 ms | 212 KB | Output is correct |
18 | Correct | 2 ms | 212 KB | Output is correct |
19 | Correct | 2 ms | 212 KB | Output is correct |
20 | Correct | 3 ms | 212 KB | Output is correct |
21 | Correct | 3 ms | 212 KB | Output is correct |
22 | Correct | 3 ms | 316 KB | Output is correct |
23 | Correct | 2 ms | 212 KB | Output is correct |
24 | Correct | 2 ms | 316 KB | Output is correct |
25 | Correct | 3 ms | 212 KB | Output is correct |
26 | Correct | 1 ms | 212 KB | Output is correct |
27 | Correct | 1 ms | 316 KB | Output is correct |
28 | Correct | 1 ms | 212 KB | Output is correct |
29 | Correct | 1 ms | 212 KB | Output is correct |
30 | Correct | 1 ms | 212 KB | Output is correct |
31 | Correct | 1 ms | 212 KB | Output is correct |
32 | Correct | 1 ms | 212 KB | Output is correct |
33 | Correct | 4 ms | 212 KB | Output is correct |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 0 ms | 316 KB | Output is correct |
2 | Correct | 0 ms | 212 KB | Output is correct |
3 | Correct | 1 ms | 212 KB | Output is correct |
4 | Correct | 0 ms | 212 KB | Output is correct |
5 | Correct | 1 ms | 212 KB | Output is correct |
6 | Correct | 1 ms | 316 KB | Output is correct |
7 | Correct | 1 ms | 320 KB | Output is correct |
8 | Correct | 0 ms | 320 KB | Output is correct |
9 | Correct | 1 ms | 340 KB | Output is correct |
10 | Correct | 1 ms | 212 KB | Output is correct |
11 | Correct | 1 ms | 212 KB | Output is correct |
12 | Correct | 0 ms | 212 KB | Output is correct |
13 | Correct | 0 ms | 212 KB | Output is correct |
14 | Correct | 5 ms | 328 KB | Output is correct |
15 | Correct | 4 ms | 324 KB | Output is correct |
16 | Correct | 4 ms | 212 KB | Output is correct |
17 | Correct | 5 ms | 212 KB | Output is correct |
18 | Correct | 2 ms | 212 KB | Output is correct |
19 | Correct | 2 ms | 212 KB | Output is correct |
20 | Correct | 3 ms | 212 KB | Output is correct |
21 | Correct | 3 ms | 212 KB | Output is correct |
22 | Correct | 3 ms | 316 KB | Output is correct |
23 | Correct | 2 ms | 212 KB | Output is correct |
24 | Correct | 2 ms | 316 KB | Output is correct |
25 | Correct | 3 ms | 212 KB | Output is correct |
26 | Correct | 1 ms | 212 KB | Output is correct |
27 | Correct | 1 ms | 316 KB | Output is correct |
28 | Correct | 1 ms | 212 KB | Output is correct |
29 | Correct | 1 ms | 212 KB | Output is correct |
30 | Correct | 1 ms | 212 KB | Output is correct |
31 | Correct | 1 ms | 212 KB | Output is correct |
32 | Correct | 1 ms | 212 KB | Output is correct |
33 | Correct | 4 ms | 212 KB | Output is correct |
34 | Correct | 198 ms | 340 KB | Output is correct |
35 | Correct | 198 ms | 348 KB | Output is correct |
36 | Correct | 192 ms | 344 KB | Output is correct |
37 | Correct | 178 ms | 340 KB | Output is correct |
38 | Correct | 89 ms | 356 KB | Output is correct |
39 | Correct | 100 ms | 324 KB | Output is correct |
40 | Correct | 126 ms | 444 KB | Output is correct |
41 | Correct | 114 ms | 356 KB | Output is correct |
42 | Correct | 187 ms | 348 KB | Output is correct |
43 | Correct | 79 ms | 404 KB | Output is correct |
44 | Correct | 154 ms | 340 KB | Output is correct |
45 | Correct | 28 ms | 340 KB | Output is correct |
46 | Correct | 29 ms | 340 KB | Output is correct |
47 | Correct | 32 ms | 340 KB | Output is correct |
48 | Correct | 87 ms | 320 KB | Output is correct |
49 | Correct | 70 ms | 320 KB | Output is correct |
50 | Correct | 17 ms | 340 KB | Output is correct |
51 | Correct | 17 ms | 340 KB | Output is correct |
52 | Correct | 164 ms | 464 KB | Output is correct |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 0 ms | 316 KB | Output is correct |
2 | Correct | 0 ms | 212 KB | Output is correct |
3 | Correct | 1 ms | 212 KB | Output is correct |
4 | Correct | 0 ms | 212 KB | Output is correct |
5 | Correct | 1 ms | 212 KB | Output is correct |
6 | Correct | 1 ms | 316 KB | Output is correct |
7 | Correct | 1 ms | 320 KB | Output is correct |
8 | Correct | 0 ms | 320 KB | Output is correct |
9 | Correct | 1 ms | 340 KB | Output is correct |
10 | Correct | 1 ms | 212 KB | Output is correct |
11 | Correct | 1 ms | 212 KB | Output is correct |
12 | Correct | 0 ms | 212 KB | Output is correct |
13 | Correct | 0 ms | 212 KB | Output is correct |
14 | Correct | 5 ms | 328 KB | Output is correct |
15 | Correct | 4 ms | 324 KB | Output is correct |
16 | Correct | 4 ms | 212 KB | Output is correct |
17 | Correct | 5 ms | 212 KB | Output is correct |
18 | Correct | 2 ms | 212 KB | Output is correct |
19 | Correct | 2 ms | 212 KB | Output is correct |
20 | Correct | 3 ms | 212 KB | Output is correct |
21 | Correct | 3 ms | 212 KB | Output is correct |
22 | Correct | 3 ms | 316 KB | Output is correct |
23 | Correct | 2 ms | 212 KB | Output is correct |
24 | Correct | 2 ms | 316 KB | Output is correct |
25 | Correct | 3 ms | 212 KB | Output is correct |
26 | Correct | 1 ms | 212 KB | Output is correct |
27 | Correct | 1 ms | 316 KB | Output is correct |
28 | Correct | 1 ms | 212 KB | Output is correct |
29 | Correct | 1 ms | 212 KB | Output is correct |
30 | Correct | 1 ms | 212 KB | Output is correct |
31 | Correct | 1 ms | 212 KB | Output is correct |
32 | Correct | 1 ms | 212 KB | Output is correct |
33 | Correct | 4 ms | 212 KB | Output is correct |
34 | Correct | 198 ms | 340 KB | Output is correct |
35 | Correct | 198 ms | 348 KB | Output is correct |
36 | Correct | 192 ms | 344 KB | Output is correct |
37 | Correct | 178 ms | 340 KB | Output is correct |
38 | Correct | 89 ms | 356 KB | Output is correct |
39 | Correct | 100 ms | 324 KB | Output is correct |
40 | Correct | 126 ms | 444 KB | Output is correct |
41 | Correct | 114 ms | 356 KB | Output is correct |
42 | Correct | 187 ms | 348 KB | Output is correct |
43 | Correct | 79 ms | 404 KB | Output is correct |
44 | Correct | 154 ms | 340 KB | Output is correct |
45 | Correct | 28 ms | 340 KB | Output is correct |
46 | Correct | 29 ms | 340 KB | Output is correct |
47 | Correct | 32 ms | 340 KB | Output is correct |
48 | Correct | 87 ms | 320 KB | Output is correct |
49 | Correct | 70 ms | 320 KB | Output is correct |
50 | Correct | 17 ms | 340 KB | Output is correct |
51 | Correct | 17 ms | 340 KB | Output is correct |
52 | Correct | 164 ms | 464 KB | Output is correct |
53 | Execution timed out | 2085 ms | 4324 KB | Time limit exceeded |
54 | Halted | 0 ms | 0 KB | - |