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Submission #690326

# Submission time Handle Problem Language Result Execution time Memory
690326 2023-01-30T06:24:23 Z zeroesandones Rice Hub (IOI11_ricehub) C++17
100 / 100
 12 ms 2528 KB 
#include "bits/stdc++.h"
#include "ricehub.h"
using namespace std;

using ll = long long;
using vi = vector<long long>;

#define pb emplace_back

int besthub(int R, int L, int X[], long long B)
{
  ll pref[R] = {};
  pref[0] = X[0];
  for(int i = 1; i < R; ++i) {
    pref[i] = pref[i - 1] + X[i];
  }

  auto check = [&](int mid) {
    for(int i = 0; i < R; ++i) {
      if(i + mid - 1 < R) {
        ll p = (i + mid / 2);
        ll sum = pref[p - 1] - (i == 0 ? 0 : pref[i - 1]);
        ll val = pref[i + mid - 1] - pref[p] - X[p] * (i + mid - 1 - p) + X[p] * (p - 1 - (i - 1)) - sum;
        if(val <= B)
          return true;
      }
    }

    return false;
  };

  ll l = 0, r = R + 1;
  while(l + 1 < r) {
    ll mid = (l + r) / 2;
    if(check(mid)) {
      l = mid;
    } else {
      r = mid;
    }
  }

  return l;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 308 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 312 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 312 KB Output is correct
16 Correct 0 ms 320 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 224 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 320 KB Output is correct
28 Correct 1 ms 352 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 3 ms 584 KB Output is correct
3 Correct 11 ms 2476 KB Output is correct
4 Correct 12 ms 2516 KB Output is correct
5 Correct 7 ms 1236 KB Output is correct
6 Correct 6 ms 1236 KB Output is correct
7 Correct 10 ms 2260 KB Output is correct
8 Correct 10 ms 2132 KB Output is correct
9 Correct 7 ms 1184 KB Output is correct
10 Correct 6 ms 1108 KB Output is correct
11 Correct 12 ms 2528 KB Output is correct
12 Correct 11 ms 2476 KB Output is correct
13 Correct 6 ms 1236 KB Output is correct
14 Correct 6 ms 1216 KB Output is correct
15 Correct 8 ms 1968 KB Output is correct
16 Correct 9 ms 1876 KB Output is correct
17 Correct 10 ms 2172 KB Output is correct
18 Correct 10 ms 2260 KB Output is correct
19 Correct 10 ms 2348 KB Output is correct
20 Correct 11 ms 2380 KB Output is correct