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Submission #488974

# Submission time Handle Problem Language Result Execution time Memory
488974 2021-11-21T00:46:15 Z fun_day Rice Hub (IOI11_ricehub) C++14
17 / 100
 99 ms 1484 KB 
#include <bits/stdc++.h>

using namespace std;

int besthub(int R, int L, int X[] , long long B){
  vector<long long> pref(R);
  for(int i = 0 ; i < R ; i++){
    if(i == 0) pref[i] = (long long) X[i];
    else pref[i] = pref[i - 1] + (long long) X[i];
  }
  int best = 0;
  for(int i = 1 ; i < R ; i++){
    int l = 0 , r = i;
    int ans = 0;
    while(l <= r){
      int mid = l + (r - l) / 2;
      int used = i - mid;
      long long sum = (long long) X[i] * used  - (pref[i - 1] - (mid > 0 ? pref[mid - 1] : 0));
      long long keep = B - sum;
      int left = i , right = R - 1;
      int here = 0;
      while(left <= right){
        int middle = left + (right - left) / 2;
        int cur = middle - i;
        long long s = pref[middle] - pref[i] - (long long) X[i] * cur;
        if(s + sum <= B){
          here = max(here , cur);
          left = middle + 1;
        }
        else{
          right = middle - 1;
        }
      }
      if(keep >= 0){
        ans = max(ans , here + used);        
        r = mid - 1;
      }
      else{
        l = mid + 1;        
      }
    }
    best = max(best , ans);
    if(best == R - 1) break;
  }
  return best + 1;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory 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

Subtask #2
0 / 25.0

# Verdict Execution time Memory 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 0 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 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Incorrect 1 ms 204 KB Output isn't correct
28 Halted 0 ms 0 KB -

Subtask #3
0 / 26.0

# Verdict Execution time Memory 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 1 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 1 ms 204 KB Output is correct
8 Correct 1 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 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Incorrect 1 ms 204 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 460 KB Output is correct
2 Correct 11 ms 460 KB Output is correct
3 Correct 10 ms 1484 KB Output is correct
4 Correct 99 ms 1380 KB Output is correct
5 Correct 29 ms 840 KB Output is correct
6 Correct 29 ms 844 KB Output is correct
7 Correct 9 ms 1376 KB Output is correct
8 Correct 91 ms 1364 KB Output is correct
9 Correct 40 ms 844 KB Output is correct
10 Correct 42 ms 844 KB Output is correct
11 Correct 11 ms 1484 KB Output is correct
12 Correct 99 ms 1460 KB Output is correct
13 Incorrect 31 ms 844 KB Output isn't correct
14 Halted 0 ms 0 KB -