답안 #298127

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
298127 2020-09-12T12:20:08 Z eriksuenderhauf Monochrome Points (JOI20_monochrome) C++11
35 / 100
1953 ms 4400 KB
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 2e5 + 5;
int a[2*N];
ll dp[N];

ll solve(int n, int i) {
  if (dp[i] != 0)
    return dp[i];
  int ptr[2] = {i+n, i+n}, cnt[4] = {0, 0, 0, 0};
  // auto next = [&](int& j) {
  //   j = j+1 < 2*n ? j+1 : j+1-2*n;
  // };
  #define next(x) x = x+1 < 2*n ? x+1 : x+1-2*n
  ll val = 0;
  for (int j = i, c = a[i]; j < i+n; c = a[++j]) {
    while (ptr[c] != i && a[ptr[c]] == c)
      cnt[c+2]++, next(ptr[c]);
    next(ptr[c]);
    val += min(cnt[c+2], cnt[c^1]) + cnt[c]++;
  }
  return dp[i] = val;
}

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int get(int l, int r) {
  return uniform_int_distribution<int>(l, r)(rng);
}

int main() {
  ios_base::sync_with_stdio(false); cin.tie(0);
  auto cur_t = clock();
  int n; cin >> n;
  string s; cin >> s;
  for (int i = 0; i < 2*n; i++)
    a[i] = s[i] == 'B';
  ll ans = 0;
  while (clock() - cur_t < 1950000) {
    ans = max(ans, solve(n, get(0, n-1)));
    // cerr << "HUH" << endl;
  }
  cout << ans << "\n";
}
# 결과 실행 시간 메모리 Grader output
1 Correct 1951 ms 404 KB Output is correct
2 Correct 1951 ms 396 KB Output is correct
3 Correct 1951 ms 396 KB Output is correct
4 Correct 1951 ms 400 KB Output is correct
5 Correct 1951 ms 400 KB Output is correct
6 Correct 1951 ms 404 KB Output is correct
7 Correct 1951 ms 404 KB Output is correct
8 Correct 1951 ms 504 KB Output is correct
9 Correct 1951 ms 396 KB Output is correct
10 Correct 1951 ms 504 KB Output is correct
11 Correct 1951 ms 504 KB Output is correct
12 Correct 1951 ms 404 KB Output is correct
13 Correct 1951 ms 504 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1951 ms 404 KB Output is correct
2 Correct 1951 ms 396 KB Output is correct
3 Correct 1951 ms 396 KB Output is correct
4 Correct 1951 ms 400 KB Output is correct
5 Correct 1951 ms 400 KB Output is correct
6 Correct 1951 ms 404 KB Output is correct
7 Correct 1951 ms 404 KB Output is correct
8 Correct 1951 ms 504 KB Output is correct
9 Correct 1951 ms 396 KB Output is correct
10 Correct 1951 ms 504 KB Output is correct
11 Correct 1951 ms 504 KB Output is correct
12 Correct 1951 ms 404 KB Output is correct
13 Correct 1951 ms 504 KB Output is correct
14 Correct 1951 ms 400 KB Output is correct
15 Correct 1951 ms 384 KB Output is correct
16 Correct 1951 ms 400 KB Output is correct
17 Correct 1951 ms 404 KB Output is correct
18 Correct 1951 ms 504 KB Output is correct
19 Correct 1951 ms 400 KB Output is correct
20 Correct 1951 ms 504 KB Output is correct
21 Correct 1951 ms 504 KB Output is correct
22 Correct 1951 ms 504 KB Output is correct
23 Correct 1951 ms 404 KB Output is correct
24 Correct 1951 ms 404 KB Output is correct
25 Correct 1951 ms 412 KB Output is correct
26 Correct 1951 ms 404 KB Output is correct
27 Correct 1951 ms 504 KB Output is correct
28 Correct 1951 ms 504 KB Output is correct
29 Correct 1951 ms 504 KB Output is correct
30 Correct 1951 ms 504 KB Output is correct
31 Correct 1951 ms 504 KB Output is correct
32 Correct 1951 ms 384 KB Output is correct
33 Correct 1951 ms 504 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1951 ms 404 KB Output is correct
2 Correct 1951 ms 396 KB Output is correct
3 Correct 1951 ms 396 KB Output is correct
4 Correct 1951 ms 400 KB Output is correct
5 Correct 1951 ms 400 KB Output is correct
6 Correct 1951 ms 404 KB Output is correct
7 Correct 1951 ms 404 KB Output is correct
8 Correct 1951 ms 504 KB Output is correct
9 Correct 1951 ms 396 KB Output is correct
10 Correct 1951 ms 504 KB Output is correct
11 Correct 1951 ms 504 KB Output is correct
12 Correct 1951 ms 404 KB Output is correct
13 Correct 1951 ms 504 KB Output is correct
14 Correct 1951 ms 400 KB Output is correct
15 Correct 1951 ms 384 KB Output is correct
16 Correct 1951 ms 400 KB Output is correct
17 Correct 1951 ms 404 KB Output is correct
18 Correct 1951 ms 504 KB Output is correct
19 Correct 1951 ms 400 KB Output is correct
20 Correct 1951 ms 504 KB Output is correct
21 Correct 1951 ms 504 KB Output is correct
22 Correct 1951 ms 504 KB Output is correct
23 Correct 1951 ms 404 KB Output is correct
24 Correct 1951 ms 404 KB Output is correct
25 Correct 1951 ms 412 KB Output is correct
26 Correct 1951 ms 404 KB Output is correct
27 Correct 1951 ms 504 KB Output is correct
28 Correct 1951 ms 504 KB Output is correct
29 Correct 1951 ms 504 KB Output is correct
30 Correct 1951 ms 504 KB Output is correct
31 Correct 1951 ms 504 KB Output is correct
32 Correct 1951 ms 384 KB Output is correct
33 Correct 1951 ms 504 KB Output is correct
34 Correct 1951 ms 440 KB Output is correct
35 Correct 1951 ms 504 KB Output is correct
36 Correct 1951 ms 440 KB Output is correct
37 Correct 1951 ms 436 KB Output is correct
38 Correct 1951 ms 436 KB Output is correct
39 Correct 1951 ms 436 KB Output is correct
40 Correct 1951 ms 504 KB Output is correct
41 Correct 1951 ms 440 KB Output is correct
42 Correct 1951 ms 436 KB Output is correct
43 Correct 1951 ms 436 KB Output is correct
44 Correct 1951 ms 436 KB Output is correct
45 Correct 1951 ms 504 KB Output is correct
46 Correct 1951 ms 432 KB Output is correct
47 Correct 1951 ms 504 KB Output is correct
48 Correct 1951 ms 504 KB Output is correct
49 Correct 1951 ms 440 KB Output is correct
50 Correct 1951 ms 432 KB Output is correct
51 Correct 1951 ms 504 KB Output is correct
52 Correct 1951 ms 504 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1951 ms 404 KB Output is correct
2 Correct 1951 ms 396 KB Output is correct
3 Correct 1951 ms 396 KB Output is correct
4 Correct 1951 ms 400 KB Output is correct
5 Correct 1951 ms 400 KB Output is correct
6 Correct 1951 ms 404 KB Output is correct
7 Correct 1951 ms 404 KB Output is correct
8 Correct 1951 ms 504 KB Output is correct
9 Correct 1951 ms 396 KB Output is correct
10 Correct 1951 ms 504 KB Output is correct
11 Correct 1951 ms 504 KB Output is correct
12 Correct 1951 ms 404 KB Output is correct
13 Correct 1951 ms 504 KB Output is correct
14 Correct 1951 ms 400 KB Output is correct
15 Correct 1951 ms 384 KB Output is correct
16 Correct 1951 ms 400 KB Output is correct
17 Correct 1951 ms 404 KB Output is correct
18 Correct 1951 ms 504 KB Output is correct
19 Correct 1951 ms 400 KB Output is correct
20 Correct 1951 ms 504 KB Output is correct
21 Correct 1951 ms 504 KB Output is correct
22 Correct 1951 ms 504 KB Output is correct
23 Correct 1951 ms 404 KB Output is correct
24 Correct 1951 ms 404 KB Output is correct
25 Correct 1951 ms 412 KB Output is correct
26 Correct 1951 ms 404 KB Output is correct
27 Correct 1951 ms 504 KB Output is correct
28 Correct 1951 ms 504 KB Output is correct
29 Correct 1951 ms 504 KB Output is correct
30 Correct 1951 ms 504 KB Output is correct
31 Correct 1951 ms 504 KB Output is correct
32 Correct 1951 ms 384 KB Output is correct
33 Correct 1951 ms 504 KB Output is correct
34 Correct 1951 ms 440 KB Output is correct
35 Correct 1951 ms 504 KB Output is correct
36 Correct 1951 ms 440 KB Output is correct
37 Correct 1951 ms 436 KB Output is correct
38 Correct 1951 ms 436 KB Output is correct
39 Correct 1951 ms 436 KB Output is correct
40 Correct 1951 ms 504 KB Output is correct
41 Correct 1951 ms 440 KB Output is correct
42 Correct 1951 ms 436 KB Output is correct
43 Correct 1951 ms 436 KB Output is correct
44 Correct 1951 ms 436 KB Output is correct
45 Correct 1951 ms 504 KB Output is correct
46 Correct 1951 ms 432 KB Output is correct
47 Correct 1951 ms 504 KB Output is correct
48 Correct 1951 ms 504 KB Output is correct
49 Correct 1951 ms 440 KB Output is correct
50 Correct 1951 ms 432 KB Output is correct
51 Correct 1951 ms 504 KB Output is correct
52 Correct 1951 ms 504 KB Output is correct
53 Correct 1951 ms 3596 KB Output is correct
54 Correct 1953 ms 3864 KB Output is correct
55 Correct 1952 ms 4004 KB Output is correct
56 Correct 1953 ms 3688 KB Output is correct
57 Correct 1951 ms 4108 KB Output is correct
58 Correct 1952 ms 4112 KB Output is correct
59 Correct 1951 ms 4236 KB Output is correct
60 Correct 1953 ms 4236 KB Output is correct
61 Correct 1953 ms 4400 KB Output is correct
62 Incorrect 1953 ms 4364 KB Output isn't correct
63 Halted 0 ms 0 KB -