oj.uz

답안 #645581

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
645581 2022-09-27T11:27:11 Z Pety Cigle (COI21_cigle) C++14
100 / 100
 189 ms 67460 KB 
#include <bits/stdc++.h>
#define ll long long

using namespace std;

const int INF = 1e9;
const int MOD = 1e9 + 7;

int dp[5002][5002], sum[5002], n, pref[5002];

int main () 
{
  ios_base::sync_with_stdio(false);
  cin.tie(0); cout.tie(0);
  cin >> n;
  for (int i = 1; i <= n; i++) {
    int a;
    cin >> a;
    sum[i] = sum[i - 1] + a;
  }
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j < i; j++)
      pref[j] = max(pref[j - 1], dp[j][i - 1]);
    int matches = 0;
    int ind = i - 1, best = pref[i - 1];
    for (int j = i; j <= n; j++) {
      dp[i][j] = best;
      while (ind > 0 && sum[j] - sum[i - 1] > sum[i - 1] - sum[ind]) 
        ind--;
      if (ind && sum[j] - sum[i - 1] == sum[i - 1] - sum[ind]) {
        matches++;
        best = max(best, matches + pref[ind]);
      }
    }
  }
  int mx = 0;
  for (int i = 1; i <= n; i++)
    mx = max(mx, dp[i][n]);
  cout << mx << "\n";
  return 0;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 584 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 596 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 596 KB Output is correct

Subtask #3
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2772 KB Output is correct
2 Correct 2 ms 2764 KB Output is correct
3 Correct 5 ms 2772 KB Output is correct
4 Correct 2 ms 2772 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 2 ms 2764 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 2 ms 2772 KB Output is correct
10 Correct 2 ms 2772 KB Output is correct
11 Correct 2 ms 2760 KB Output is correct
12 Correct 2 ms 2772 KB Output is correct

Subtask #4
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 584 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 596 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 596 KB Output is correct
21 Correct 2 ms 2772 KB Output is correct
22 Correct 2 ms 2764 KB Output is correct
23 Correct 5 ms 2772 KB Output is correct
24 Correct 2 ms 2772 KB Output is correct
25 Correct 2 ms 2772 KB Output is correct
26 Correct 2 ms 2772 KB Output is correct
27 Correct 2 ms 2764 KB Output is correct
28 Correct 2 ms 2772 KB Output is correct
29 Correct 2 ms 2772 KB Output is correct
30 Correct 2 ms 2772 KB Output is correct
31 Correct 2 ms 2760 KB Output is correct
32 Correct 2 ms 2772 KB Output is correct
33 Correct 2 ms 2772 KB Output is correct
34 Correct 2 ms 2772 KB Output is correct
35 Correct 2 ms 2772 KB Output is correct
36 Correct 2 ms 2772 KB Output is correct
37 Correct 3 ms 2772 KB Output is correct
38 Correct 3 ms 2772 KB Output is correct
39 Correct 3 ms 2772 KB Output is correct
40 Correct 3 ms 2768 KB Output is correct
41 Correct 3 ms 2772 KB Output is correct
42 Correct 2 ms 2772 KB Output is correct
43 Correct 2 ms 2768 KB Output is correct
44 Correct 3 ms 2764 KB Output is correct
45 Correct 2 ms 2772 KB Output is correct
46 Correct 2 ms 2772 KB Output is correct
47 Correct 2 ms 2764 KB Output is correct
48 Correct 2 ms 2772 KB Output is correct
49 Correct 2 ms 2772 KB Output is correct

Subtask #5
52.0 / 52.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 584 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 596 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 596 KB Output is correct
21 Correct 2 ms 2772 KB Output is correct
22 Correct 2 ms 2764 KB Output is correct
23 Correct 5 ms 2772 KB Output is correct
24 Correct 2 ms 2772 KB Output is correct
25 Correct 2 ms 2772 KB Output is correct
26 Correct 2 ms 2772 KB Output is correct
27 Correct 2 ms 2764 KB Output is correct
28 Correct 2 ms 2772 KB Output is correct
29 Correct 2 ms 2772 KB Output is correct
30 Correct 2 ms 2772 KB Output is correct
31 Correct 2 ms 2760 KB Output is correct
32 Correct 2 ms 2772 KB Output is correct
33 Correct 2 ms 2772 KB Output is correct
34 Correct 2 ms 2772 KB Output is correct
35 Correct 2 ms 2772 KB Output is correct
36 Correct 2 ms 2772 KB Output is correct
37 Correct 3 ms 2772 KB Output is correct
38 Correct 3 ms 2772 KB Output is correct
39 Correct 3 ms 2772 KB Output is correct
40 Correct 3 ms 2768 KB Output is correct
41 Correct 3 ms 2772 KB Output is correct
42 Correct 2 ms 2772 KB Output is correct
43 Correct 2 ms 2768 KB Output is correct
44 Correct 3 ms 2764 KB Output is correct
45 Correct 2 ms 2772 KB Output is correct
46 Correct 2 ms 2772 KB Output is correct
47 Correct 2 ms 2764 KB Output is correct
48 Correct 2 ms 2772 KB Output is correct
49 Correct 2 ms 2772 KB Output is correct
50 Correct 141 ms 67276 KB Output is correct
51 Correct 139 ms 67324 KB Output is correct
52 Correct 140 ms 67336 KB Output is correct
53 Correct 137 ms 67332 KB Output is correct
54 Correct 144 ms 67248 KB Output is correct
55 Correct 139 ms 67288 KB Output is correct
56 Correct 173 ms 67332 KB Output is correct
57 Correct 172 ms 67300 KB Output is correct
58 Correct 189 ms 67308 KB Output is correct
59 Correct 177 ms 67364 KB Output is correct
60 Correct 179 ms 67264 KB Output is correct
61 Correct 167 ms 67276 KB Output is correct
62 Correct 156 ms 67276 KB Output is correct
63 Correct 150 ms 67460 KB Output is correct
64 Correct 169 ms 67396 KB Output is correct
65 Correct 152 ms 67252 KB Output is correct
66 Correct 151 ms 67324 KB Output is correct
67 Correct 151 ms 67296 KB Output is correct
68 Correct 146 ms 67236 KB Output is correct
69 Correct 143 ms 67320 KB Output is correct
70 Correct 176 ms 67340 KB Output is correct
71 Correct 182 ms 67316 KB Output is correct
72 Correct 163 ms 67300 KB Output is correct