제출 #1334640

#제출 시각아이디문제언어결과실행 시간메모리
1334640Zone_zonee쌀 창고 (IOI11_ricehub)C++20
100 / 100
13 ms2372 KiB
#include "ricehub.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 1e5+10;

ll qs[N], a[N];
int besthub(int N, int L, int x[], long long B)
{
  for(int i = 0; i < N; ++i) a[i+1] = x[i], qs[i+1] = qs[i]+x[i];
  int ans = 0;
  for(int i = 1; i <= N; ++i){
    int l = i, r = N;
    while(l < r){
      int mid = (l+r+1)>>1;
      int med = (mid+i)/2;
      ll L = (med-i+1)*a[med] - (qs[med] - qs[i-1]);
      ll R = (qs[mid]-qs[med]) - (mid-med)*a[med];
      if(L+R <= B) l = mid;
      else r = mid-1;
    }
    ans = max(ans, l-i+1);
  }
  return ans;
}
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