답안 #504077

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
504077	2022-01-09T16:36:38 Z	couplefire	Group Photo (JOI21_ho_t3)	C++17	100 / 100	352 ms	444 KB

Main

#include <bits/stdc++.h>
using namespace std;
 
template<typename T>
class Fenwick {
 public:
  int n;
  vector<T> tree;
 
  Fenwick(int n) : n(n), tree(n) {}
 
  void Modify(int p, T x) {
    for (int i = p; i < n; i |= i + 1) {
      tree[i] += x;
    }
  }
 
  T Query(int p) {
    T res = 0;
    for (int i = p; i > 0; i &= i - 1) {
      res += tree[i - 1];
    }
    return res;
  }
};
 
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
 
  int N;
  cin >> N;
 
  vector<int> H(N);
  for (int i = 0; i < N; i++) {
    cin >> H[i];
    H[i]--;
  }
 
  vector<int> dp(N + 1, INT_MAX);
  dp[0] = 0;
 
  for (int i = 0; i < N; i++) {
    vector<int> A;
    vector<int> pos(N, -1);
    for (int j = 0; j < N; j++) {
      if (H[j] >= i) {
        pos[H[j]] = A.size();
        A.emplace_back(H[j]);
      }
    }
    int sum_pos = 0;
    int inversion = 0;
    Fenwick<int> F(A.size());
    for (int j = 1; i + j <= N; j++) {
      F.Modify(pos[i + j - 1], 1);
      sum_pos += pos[i + j - 1] - (j - 1);
      inversion += F.Query(pos[i + j - 1]) ;
      dp[i + j] = min(dp[i + j], dp[i] + sum_pos + inversion);
    }
  }
 
  cout << dp[N] << '\n';
  return 0;
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	0 ms	204 KB	Output is correct
6	Correct	0 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	0 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	0 ms	204 KB	Output is correct
6	Correct	0 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	0 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	0 ms	204 KB	Output is correct
12	Correct	1 ms	224 KB	Output is correct
13	Correct	0 ms	304 KB	Output is correct
14	Correct	1 ms	316 KB	Output is correct
15	Correct	0 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	0 ms	204 KB	Output is correct
19	Correct	0 ms	312 KB	Output is correct
20	Correct	0 ms	204 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	0 ms	204 KB	Output is correct
6	Correct	0 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	0 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	0 ms	204 KB	Output is correct
12	Correct	1 ms	224 KB	Output is correct
13	Correct	0 ms	304 KB	Output is correct
14	Correct	1 ms	316 KB	Output is correct
15	Correct	0 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	0 ms	204 KB	Output is correct
19	Correct	0 ms	312 KB	Output is correct
20	Correct	0 ms	204 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	312 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	312 KB	Output is correct
27	Correct	1 ms	332 KB	Output is correct
28	Correct	1 ms	312 KB	Output is correct
29	Correct	1 ms	332 KB	Output is correct
30	Correct	1 ms	332 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	0 ms	204 KB	Output is correct
6	Correct	0 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	0 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	0 ms	204 KB	Output is correct
12	Correct	1 ms	224 KB	Output is correct
13	Correct	0 ms	304 KB	Output is correct
14	Correct	1 ms	316 KB	Output is correct
15	Correct	0 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	0 ms	204 KB	Output is correct
19	Correct	0 ms	312 KB	Output is correct
20	Correct	0 ms	204 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	312 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	312 KB	Output is correct
27	Correct	1 ms	332 KB	Output is correct
28	Correct	1 ms	312 KB	Output is correct
29	Correct	1 ms	332 KB	Output is correct
30	Correct	1 ms	332 KB	Output is correct
31	Correct	8 ms	312 KB	Output is correct
32	Correct	8 ms	332 KB	Output is correct
33	Correct	9 ms	336 KB	Output is correct
34	Correct	8 ms	332 KB	Output is correct
35	Correct	9 ms	332 KB	Output is correct
36	Correct	11 ms	340 KB	Output is correct
37	Correct	9 ms	308 KB	Output is correct
38	Correct	8 ms	332 KB	Output is correct
39	Correct	9 ms	336 KB	Output is correct
40	Correct	12 ms	332 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	0 ms	204 KB	Output is correct
6	Correct	0 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	0 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	0 ms	204 KB	Output is correct
12	Correct	1 ms	224 KB	Output is correct
13	Correct	0 ms	304 KB	Output is correct
14	Correct	1 ms	316 KB	Output is correct
15	Correct	0 ms	204 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	0 ms	204 KB	Output is correct
19	Correct	0 ms	312 KB	Output is correct
20	Correct	0 ms	204 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	312 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	312 KB	Output is correct
27	Correct	1 ms	332 KB	Output is correct
28	Correct	1 ms	312 KB	Output is correct
29	Correct	1 ms	332 KB	Output is correct
30	Correct	1 ms	332 KB	Output is correct
31	Correct	8 ms	312 KB	Output is correct
32	Correct	8 ms	332 KB	Output is correct
33	Correct	9 ms	336 KB	Output is correct
34	Correct	8 ms	332 KB	Output is correct
35	Correct	9 ms	332 KB	Output is correct
36	Correct	11 ms	340 KB	Output is correct
37	Correct	9 ms	308 KB	Output is correct
38	Correct	8 ms	332 KB	Output is correct
39	Correct	9 ms	336 KB	Output is correct
40	Correct	12 ms	332 KB	Output is correct
41	Correct	341 ms	432 KB	Output is correct
42	Correct	352 ms	432 KB	Output is correct
43	Correct	333 ms	444 KB	Output is correct
44	Correct	341 ms	436 KB	Output is correct
45	Correct	336 ms	324 KB	Output is correct
46	Correct	337 ms	332 KB	Output is correct
47	Correct	342 ms	432 KB	Output is correct
48	Correct	342 ms	440 KB	Output is correct
49	Correct	342 ms	428 KB	Output is correct
50	Correct	340 ms	436 KB	Output is correct
51	Correct	331 ms	432 KB	Output is correct
52	Correct	337 ms	428 KB	Output is correct
53	Correct	334 ms	432 KB	Output is correct
54	Correct	347 ms	432 KB	Output is correct
55	Correct	337 ms	432 KB	Output is correct

답안 #504077

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 7.0 / 7.0

Subtask #3 32.0 / 32.0

Subtask #4 20.0 / 20.0

Subtask #5 36.0 / 36.0

Subtask #1
5.0 / 5.0

Subtask #2
7.0 / 7.0

Subtask #3
32.0 / 32.0

Subtask #4
20.0 / 20.0

Subtask #5
36.0 / 36.0