Submission #1066392

#	Time	Username	Problem	Language	Result	Execution time	Memory
1066392		DeathIsAwe	Rice Hub (IOI11_ricehub)	C++14	100 / 100	11 ms	3684 KiB

ricehub

#include "ricehub.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long

int besthub(int r, int l, int x[], long long b) {
  int ans = 0;
  int left = 0, right = 0, middle = 0;
  ll leftsum = 0, rightsum = 0;
  bool prev = true;
  while (right != r - 1) {
    if (prev) {
      if ((right - left + 1) % 2 == 0) {
        right++; middle++;
        leftsum += (ll)(middle - left) * (x[middle] - x[middle - 1]);
        rightsum -= (ll)(right - middle) * (x[middle]  - x[middle - 1]);
        rightsum += x[right] - x[middle];
        if (leftsum + rightsum > b) {
          prev = false;
        } else {
          prev = true;
          ans = max(ans, right - left + 1);
        }
      } else {
        right++;
        rightsum += x[right] - x[middle];
        if (leftsum + rightsum > b) {
          prev = false;
        } else {
          prev = true;
          ans = max(ans, right - left + 1);
        }
      }
    } else {
      if ((right - left + 1) % 2 == 0) {
        left++; middle++;
        leftsum += (ll)(middle - left + 1) * (x[middle] - x[middle - 1]);
        rightsum -= (ll)(right - middle + 1) * (x[middle]  - x[middle - 1]);
        leftsum -= x[middle] - x[left - 1];
        if (leftsum + rightsum > b) {
          prev = false;
        } else {
          prev = true;
          ans = max(ans, right - left + 1);
        }
      } else {
        left++;
        leftsum -= x[middle] - x[left - 1];
        if (leftsum + rightsum > b) {
          prev = false;
        } else {
          prev = true;
          ans = max(ans, right - left + 1);
        }
      }
    }
    //cout << left << ' ' << middle << ' ' << right << ' ' << leftsum << ' ' << rightsum << '\n';
  }
  return ans;
}

• Subtask 1: 17 / 17
• Subtask 2: 25 / 25
• Subtask 3: 26 / 26
• Subtask 4: 32 / 32