Submission #1095413

#	Time	Username	Problem	Language	Result	Execution time	Memory
1095413		TitanicXDzz	Rice Hub (IOI11_ricehub)	C++14	100 / 100	16 ms	2664 KiB

ricehub

#include "ricehub.h"
#include<bits/stdc++.h>
using namespace std;
long long dp[100010];
int besthub(int n, int q, int a[], long long b)
{
  for(int i=1;i<=n;i++)
    dp[i]=dp[i-1]+a[i-1];
  int l=1;
  int r=n;
  while(l!=r){
    int mid=(l+r+1)/2;
    long long mini=LLONG_MAX;
    if(mid%2==0){
        for(int i=1;i<=n-mid+1;i++){
            int m=i+mid/2;
            mini=min(mini,dp[i+mid-1]-dp[m-1]*2+dp[i-1]);
        }
    }
    if(mid%2==1){
        for(int i=1;i<=n-mid+1;i++){
            int m=i+mid/2;
            mini=min(mini,dp[i+mid-1]-dp[m]-dp[m-1]+dp[i-1]);
        }
    }
    if(mini<=b){
        l=mid;
    }
    else
        r=mid-1;
  }
  return l;
}

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