Submission #986799

#	Time	Username	Problem	Language	Result	Execution time	Memory
986799		huutuan	Rice Hub (IOI11_ricehub)	C++14	100 / 100	11 ms	3420 KiB

ricehub

#include "ricehub.h"

#include <bits/stdc++.h>

using namespace std;

#define int long long

const int N=1e5+10;
int n, a[N], pf[N];

int calc(int l, int r){
   int mid=(l+r)>>1;
   return a[mid]*(mid-l+1)-(pf[mid]-pf[l-1])+(pf[r]-pf[mid])-a[mid]*(r-mid);
}

int32_t besthub(int32_t R, int32_t L, int32_t X[], int B)
{
   n=R;
   for (int i=1; i<=n; ++i) a[i]=X[i-1];
   partial_sum(a, a+n+1, pf);
   int ans=0;
   for (int l=1, r=1; r<=n; ++r){
      while (calc(l, r)>B) ++l;
      ans=max(ans, r-l+1);
   }
   return ans;
}

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