답안 #298125

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
298125 2020-09-12T12:19:34 Z eriksuenderhauf Monochrome Points (JOI20_monochrome) C++11
35 / 100
23 ms 2452 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 < 19950) {
    ans = max(ans, solve(n, get(0, n-1)));
    // cerr << "HUH" << endl;
  }
  cout << ans << "\n";
}
# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 384 KB Output is correct
2 Correct 21 ms 384 KB Output is correct
3 Correct 21 ms 384 KB Output is correct
4 Correct 21 ms 384 KB Output is correct
5 Correct 21 ms 384 KB Output is correct
6 Correct 21 ms 384 KB Output is correct
7 Correct 21 ms 384 KB Output is correct
8 Correct 21 ms 384 KB Output is correct
9 Correct 21 ms 384 KB Output is correct
10 Correct 21 ms 384 KB Output is correct
11 Correct 21 ms 384 KB Output is correct
12 Correct 21 ms 384 KB Output is correct
13 Correct 21 ms 384 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 384 KB Output is correct
2 Correct 21 ms 384 KB Output is correct
3 Correct 21 ms 384 KB Output is correct
4 Correct 21 ms 384 KB Output is correct
5 Correct 21 ms 384 KB Output is correct
6 Correct 21 ms 384 KB Output is correct
7 Correct 21 ms 384 KB Output is correct
8 Correct 21 ms 384 KB Output is correct
9 Correct 21 ms 384 KB Output is correct
10 Correct 21 ms 384 KB Output is correct
11 Correct 21 ms 384 KB Output is correct
12 Correct 21 ms 384 KB Output is correct
13 Correct 21 ms 384 KB Output is correct
14 Correct 21 ms 384 KB Output is correct
15 Correct 21 ms 384 KB Output is correct
16 Correct 21 ms 384 KB Output is correct
17 Correct 21 ms 384 KB Output is correct
18 Correct 21 ms 384 KB Output is correct
19 Correct 21 ms 512 KB Output is correct
20 Correct 21 ms 384 KB Output is correct
21 Correct 21 ms 384 KB Output is correct
22 Correct 21 ms 384 KB Output is correct
23 Correct 21 ms 384 KB Output is correct
24 Correct 21 ms 384 KB Output is correct
25 Correct 21 ms 384 KB Output is correct
26 Correct 21 ms 512 KB Output is correct
27 Correct 21 ms 408 KB Output is correct
28 Correct 21 ms 416 KB Output is correct
29 Correct 21 ms 384 KB Output is correct
30 Correct 21 ms 308 KB Output is correct
31 Correct 21 ms 384 KB Output is correct
32 Correct 21 ms 384 KB Output is correct
33 Correct 21 ms 384 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 384 KB Output is correct
2 Correct 21 ms 384 KB Output is correct
3 Correct 21 ms 384 KB Output is correct
4 Correct 21 ms 384 KB Output is correct
5 Correct 21 ms 384 KB Output is correct
6 Correct 21 ms 384 KB Output is correct
7 Correct 21 ms 384 KB Output is correct
8 Correct 21 ms 384 KB Output is correct
9 Correct 21 ms 384 KB Output is correct
10 Correct 21 ms 384 KB Output is correct
11 Correct 21 ms 384 KB Output is correct
12 Correct 21 ms 384 KB Output is correct
13 Correct 21 ms 384 KB Output is correct
14 Correct 21 ms 384 KB Output is correct
15 Correct 21 ms 384 KB Output is correct
16 Correct 21 ms 384 KB Output is correct
17 Correct 21 ms 384 KB Output is correct
18 Correct 21 ms 384 KB Output is correct
19 Correct 21 ms 512 KB Output is correct
20 Correct 21 ms 384 KB Output is correct
21 Correct 21 ms 384 KB Output is correct
22 Correct 21 ms 384 KB Output is correct
23 Correct 21 ms 384 KB Output is correct
24 Correct 21 ms 384 KB Output is correct
25 Correct 21 ms 384 KB Output is correct
26 Correct 21 ms 512 KB Output is correct
27 Correct 21 ms 408 KB Output is correct
28 Correct 21 ms 416 KB Output is correct
29 Correct 21 ms 384 KB Output is correct
30 Correct 21 ms 308 KB Output is correct
31 Correct 21 ms 384 KB Output is correct
32 Correct 21 ms 384 KB Output is correct
33 Correct 21 ms 384 KB Output is correct
34 Correct 21 ms 384 KB Output is correct
35 Correct 21 ms 384 KB Output is correct
36 Correct 21 ms 384 KB Output is correct
37 Correct 21 ms 384 KB Output is correct
38 Correct 21 ms 384 KB Output is correct
39 Correct 21 ms 384 KB Output is correct
40 Correct 21 ms 384 KB Output is correct
41 Correct 21 ms 384 KB Output is correct
42 Correct 21 ms 384 KB Output is correct
43 Correct 21 ms 384 KB Output is correct
44 Correct 21 ms 384 KB Output is correct
45 Correct 21 ms 384 KB Output is correct
46 Correct 21 ms 384 KB Output is correct
47 Correct 21 ms 384 KB Output is correct
48 Correct 21 ms 384 KB Output is correct
49 Correct 21 ms 512 KB Output is correct
50 Correct 21 ms 384 KB Output is correct
51 Correct 21 ms 384 KB Output is correct
52 Correct 21 ms 384 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 384 KB Output is correct
2 Correct 21 ms 384 KB Output is correct
3 Correct 21 ms 384 KB Output is correct
4 Correct 21 ms 384 KB Output is correct
5 Correct 21 ms 384 KB Output is correct
6 Correct 21 ms 384 KB Output is correct
7 Correct 21 ms 384 KB Output is correct
8 Correct 21 ms 384 KB Output is correct
9 Correct 21 ms 384 KB Output is correct
10 Correct 21 ms 384 KB Output is correct
11 Correct 21 ms 384 KB Output is correct
12 Correct 21 ms 384 KB Output is correct
13 Correct 21 ms 384 KB Output is correct
14 Correct 21 ms 384 KB Output is correct
15 Correct 21 ms 384 KB Output is correct
16 Correct 21 ms 384 KB Output is correct
17 Correct 21 ms 384 KB Output is correct
18 Correct 21 ms 384 KB Output is correct
19 Correct 21 ms 512 KB Output is correct
20 Correct 21 ms 384 KB Output is correct
21 Correct 21 ms 384 KB Output is correct
22 Correct 21 ms 384 KB Output is correct
23 Correct 21 ms 384 KB Output is correct
24 Correct 21 ms 384 KB Output is correct
25 Correct 21 ms 384 KB Output is correct
26 Correct 21 ms 512 KB Output is correct
27 Correct 21 ms 408 KB Output is correct
28 Correct 21 ms 416 KB Output is correct
29 Correct 21 ms 384 KB Output is correct
30 Correct 21 ms 308 KB Output is correct
31 Correct 21 ms 384 KB Output is correct
32 Correct 21 ms 384 KB Output is correct
33 Correct 21 ms 384 KB Output is correct
34 Correct 21 ms 384 KB Output is correct
35 Correct 21 ms 384 KB Output is correct
36 Correct 21 ms 384 KB Output is correct
37 Correct 21 ms 384 KB Output is correct
38 Correct 21 ms 384 KB Output is correct
39 Correct 21 ms 384 KB Output is correct
40 Correct 21 ms 384 KB Output is correct
41 Correct 21 ms 384 KB Output is correct
42 Correct 21 ms 384 KB Output is correct
43 Correct 21 ms 384 KB Output is correct
44 Correct 21 ms 384 KB Output is correct
45 Correct 21 ms 384 KB Output is correct
46 Correct 21 ms 384 KB Output is correct
47 Correct 21 ms 384 KB Output is correct
48 Correct 21 ms 384 KB Output is correct
49 Correct 21 ms 512 KB Output is correct
50 Correct 21 ms 384 KB Output is correct
51 Correct 21 ms 384 KB Output is correct
52 Correct 21 ms 384 KB Output is correct
53 Incorrect 23 ms 2452 KB Output isn't correct
54 Halted 0 ms 0 KB -