oj.uz

Submission #628047

# Submission time Handle Problem Language Result Execution time Memory
628047 2022-08-13T03:57:26 Z Shin Bigger segments (IZhO19_segments) C++14
37 / 100
 222 ms 55344 KB 
#include<bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair

using namespace std;

const int N = 3e3 + 7;
int n;
int a[N];
long long pre[N];
int dp[N][N];
int mx[N][N];

signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cin >> n;
  for (int i = 1; i <= n; i ++) {
    cin >> a[i];
    pre[i] = pre[i - 1] + a[i];
  }

  auto get = [&](int l, int r) -> long long {
    return pre[r] - pre[l - 1];
  };

  for (int i = 1; i <= n; i ++) {
    long long s = 0;
    for (int j = i; j > 0; j --) {
      s += a[j];
      mx[i][j] = mx[i][j + 1];
      if (j == 1) {
        dp[i][j] = 1;
        mx[i][j] = max(1, mx[i][j + 1]);
        continue;
      }
      int lo = 1, hi = j - 1;
      while (lo < hi) {
        int mid = (lo + hi) >> 1;
        if (get(mid, j - 1) <= s) {
          hi = mid;
        } else {
          lo = mid + 1;
        }
      }
      if (get(lo, j - 1) > s) {
        continue;
      }
      if (mx[j - 1][lo] > 0) {
        dp[i][j] = max(dp[i][j], mx[j - 1][lo] + 1);
      }
      mx[i][j] = max(dp[i][j], mx[i][j]);
    }
  }
  cout << mx[n][1];
  return 0;
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory 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 468 KB Output is correct
5 Correct 0 ms 468 KB Output is correct
6 Correct 0 ms 468 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 0 ms 468 KB Output is correct
14 Correct 0 ms 468 KB Output is correct
15 Correct 0 ms 468 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory 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 468 KB Output is correct
5 Correct 0 ms 468 KB Output is correct
6 Correct 0 ms 468 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 0 ms 468 KB Output is correct
14 Correct 0 ms 468 KB Output is correct
15 Correct 0 ms 468 KB Output is correct
16 Correct 5 ms 4820 KB Output is correct
17 Correct 6 ms 5204 KB Output is correct
18 Correct 7 ms 5204 KB Output is correct
19 Correct 5 ms 5204 KB Output is correct
20 Correct 6 ms 5140 KB Output is correct
21 Correct 7 ms 5204 KB Output is correct
22 Correct 6 ms 4052 KB Output is correct
23 Correct 4 ms 3028 KB Output is correct
24 Correct 6 ms 5204 KB Output is correct
25 Correct 5 ms 5204 KB Output is correct
26 Correct 5 ms 5204 KB Output is correct
27 Correct 5 ms 5076 KB Output is correct
28 Correct 5 ms 5204 KB Output is correct
29 Correct 5 ms 5204 KB Output is correct
30 Correct 5 ms 5204 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory 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 468 KB Output is correct
5 Correct 0 ms 468 KB Output is correct
6 Correct 0 ms 468 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 0 ms 468 KB Output is correct
14 Correct 0 ms 468 KB Output is correct
15 Correct 0 ms 468 KB Output is correct
16 Correct 5 ms 4820 KB Output is correct
17 Correct 6 ms 5204 KB Output is correct
18 Correct 7 ms 5204 KB Output is correct
19 Correct 5 ms 5204 KB Output is correct
20 Correct 6 ms 5140 KB Output is correct
21 Correct 7 ms 5204 KB Output is correct
22 Correct 6 ms 4052 KB Output is correct
23 Correct 4 ms 3028 KB Output is correct
24 Correct 6 ms 5204 KB Output is correct
25 Correct 5 ms 5204 KB Output is correct
26 Correct 5 ms 5204 KB Output is correct
27 Correct 5 ms 5076 KB Output is correct
28 Correct 5 ms 5204 KB Output is correct
29 Correct 5 ms 5204 KB Output is correct
30 Correct 5 ms 5204 KB Output is correct
31 Correct 172 ms 39860 KB Output is correct
32 Correct 170 ms 52808 KB Output is correct
33 Correct 172 ms 55172 KB Output is correct
34 Correct 167 ms 53380 KB Output is correct
35 Correct 222 ms 55156 KB Output is correct
36 Correct 178 ms 55232 KB Output is correct
37 Correct 129 ms 43448 KB Output is correct
38 Correct 79 ms 31656 KB Output is correct
39 Correct 170 ms 55168 KB Output is correct
40 Correct 217 ms 55204 KB Output is correct
41 Correct 154 ms 55200 KB Output is correct
42 Correct 158 ms 54136 KB Output is correct
43 Correct 187 ms 52940 KB Output is correct
44 Correct 190 ms 55344 KB Output is correct
45 Correct 167 ms 55224 KB Output is correct

Subtask #4
0 / 36.0

# Verdict Execution time Memory 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 468 KB Output is correct
5 Correct 0 ms 468 KB Output is correct
6 Correct 0 ms 468 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 0 ms 468 KB Output is correct
14 Correct 0 ms 468 KB Output is correct
15 Correct 0 ms 468 KB Output is correct
16 Correct 5 ms 4820 KB Output is correct
17 Correct 6 ms 5204 KB Output is correct
18 Correct 7 ms 5204 KB Output is correct
19 Correct 5 ms 5204 KB Output is correct
20 Correct 6 ms 5140 KB Output is correct
21 Correct 7 ms 5204 KB Output is correct
22 Correct 6 ms 4052 KB Output is correct
23 Correct 4 ms 3028 KB Output is correct
24 Correct 6 ms 5204 KB Output is correct
25 Correct 5 ms 5204 KB Output is correct
26 Correct 5 ms 5204 KB Output is correct
27 Correct 5 ms 5076 KB Output is correct
28 Correct 5 ms 5204 KB Output is correct
29 Correct 5 ms 5204 KB Output is correct
30 Correct 5 ms 5204 KB Output is correct
31 Correct 172 ms 39860 KB Output is correct
32 Correct 170 ms 52808 KB Output is correct
33 Correct 172 ms 55172 KB Output is correct
34 Correct 167 ms 53380 KB Output is correct
35 Correct 222 ms 55156 KB Output is correct
36 Correct 178 ms 55232 KB Output is correct
37 Correct 129 ms 43448 KB Output is correct
38 Correct 79 ms 31656 KB Output is correct
39 Correct 170 ms 55168 KB Output is correct
40 Correct 217 ms 55204 KB Output is correct
41 Correct 154 ms 55200 KB Output is correct
42 Correct 158 ms 54136 KB Output is correct
43 Correct 187 ms 52940 KB Output is correct
44 Correct 190 ms 55344 KB Output is correct
45 Correct 167 ms 55224 KB Output is correct
46 Correct 2 ms 2388 KB Output is correct
47 Incorrect 92 ms 27312 KB Output isn't correct
48 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory 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 468 KB Output is correct
5 Correct 0 ms 468 KB Output is correct
6 Correct 0 ms 468 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 0 ms 468 KB Output is correct
14 Correct 0 ms 468 KB Output is correct
15 Correct 0 ms 468 KB Output is correct
16 Correct 5 ms 4820 KB Output is correct
17 Correct 6 ms 5204 KB Output is correct
18 Correct 7 ms 5204 KB Output is correct
19 Correct 5 ms 5204 KB Output is correct
20 Correct 6 ms 5140 KB Output is correct
21 Correct 7 ms 5204 KB Output is correct
22 Correct 6 ms 4052 KB Output is correct
23 Correct 4 ms 3028 KB Output is correct
24 Correct 6 ms 5204 KB Output is correct
25 Correct 5 ms 5204 KB Output is correct
26 Correct 5 ms 5204 KB Output is correct
27 Correct 5 ms 5076 KB Output is correct
28 Correct 5 ms 5204 KB Output is correct
29 Correct 5 ms 5204 KB Output is correct
30 Correct 5 ms 5204 KB Output is correct
31 Correct 172 ms 39860 KB Output is correct
32 Correct 170 ms 52808 KB Output is correct
33 Correct 172 ms 55172 KB Output is correct
34 Correct 167 ms 53380 KB Output is correct
35 Correct 222 ms 55156 KB Output is correct
36 Correct 178 ms 55232 KB Output is correct
37 Correct 129 ms 43448 KB Output is correct
38 Correct 79 ms 31656 KB Output is correct
39 Correct 170 ms 55168 KB Output is correct
40 Correct 217 ms 55204 KB Output is correct
41 Correct 154 ms 55200 KB Output is correct
42 Correct 158 ms 54136 KB Output is correct
43 Correct 187 ms 52940 KB Output is correct
44 Correct 190 ms 55344 KB Output is correct
45 Correct 167 ms 55224 KB Output is correct
46 Correct 2 ms 2388 KB Output is correct
47 Incorrect 92 ms 27312 KB Output isn't correct
48 Halted 0 ms 0 KB -