oj.uz

Submission #349180

# Submission time Handle Problem Language Result Execution time Memory
349180 2021-01-17T00:42:21 Z dgq Rice Hub (IOI11_ricehub) C++17
100 / 100
 19 ms 1788 KB 
#include "ricehub.h"
#include <cmath>

using namespace std;

bool poss(int len, long long budget, int *x, int n) {
  long long cost = 0;
  int a = 0;
  int b = len - 1;
  int mid = (a + b) / 2;
  long long left = 0;
  long long right = 0;
  for (int i = a; i <= b; i++) {
    cost += abs(x[i] - x[mid]);
  }
  left = mid - a;
  right = b - mid;
  if (cost <= budget) return true;
  while (b + 1 < n) {
    cost -= x[mid] - x[a];
    cost += left * (x[mid + 1] - x[mid]);
    cost -= right * (x[mid + 1] - x[mid]);
    mid++;
    a++;
    b++;
    cost += x[b] - x[mid];
    if (cost <= budget) return true;
  }
  return false;
}

int besthub(int n, int l, int x[], long long budget) {
  int a = 1;
  int b = n;
  int res = -1;
  while (a <= b) {
    int mid = (a + b) / 2;
    if (poss(mid, budget, x, n)) {
      res = mid;
      a = mid + 1;
    } else {
      b = mid - 1;
    }
  }
  return res;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 0 ms 364 KB Output is correct
9 Correct 0 ms 364 KB Output is correct
10 Correct 0 ms 364 KB Output is correct
11 Correct 0 ms 364 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 0 ms 364 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 0 ms 364 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 0 ms 364 KB Output is correct
18 Correct 0 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 0 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 0 ms 364 KB Output is correct
24 Correct 0 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 0 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 2 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 2 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 512 KB Output is correct
2 Correct 4 ms 492 KB Output is correct
3 Correct 19 ms 1788 KB Output is correct
4 Correct 17 ms 1772 KB Output is correct
5 Correct 8 ms 876 KB Output is correct
6 Correct 11 ms 1024 KB Output is correct
7 Correct 15 ms 1516 KB Output is correct
8 Correct 15 ms 1516 KB Output is correct
9 Correct 7 ms 748 KB Output is correct
10 Correct 8 ms 876 KB Output is correct
11 Correct 17 ms 1772 KB Output is correct
12 Correct 17 ms 1772 KB Output is correct
13 Correct 11 ms 876 KB Output is correct
14 Correct 9 ms 876 KB Output is correct
15 Correct 13 ms 1388 KB Output is correct
16 Correct 13 ms 1388 KB Output is correct
17 Correct 15 ms 1644 KB Output is correct
18 Correct 15 ms 1644 KB Output is correct
19 Correct 16 ms 1644 KB Output is correct
20 Correct 16 ms 1644 KB Output is correct