Submission #848855

#	Time	Username	Problem	Language	Result	Execution time	Memory
848855		Mr_Ph	Rice Hub (IOI11_ricehub)	C++14	100 / 100	12 ms	4444 KiB

ricehub

#include "ricehub.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
#define ll long long
#define sz size()
using namespace std;
int besthub(int r, int l, int arr[], long long b)
{
    int p1=0,p2=0;
    vector<ll>prf(r);
    prf[0]=arr[0];
    for(int i=1;i<r;i++)
        prf[i]=prf[i-1]+arr[i];
    int ans=0,ans1=0;
    while(p1<r)
    {
        while(p2<r)
        {
            int idx=(p1+p2)/2;
            ll left=(idx==0?0:prf[idx-1]),right=prf[p2]-prf[idx];
            if(p1!=0)left-=prf[p1-1];
            ll val=arr[idx];
            //int test=left;
            left=val*(idx-p1)-left;
            right-=val*(p2-idx);
            if(right+left<=b){
               // cout<<p1<<" "<<p2<<" "<<left<<" "<<right<<endl;
               ans=max(ans,(p2-p1+1));
                p2++;
            }
            else break;
        }
        p1++;
    }
    return ans;
}

Compilation message (stderr)

ricehub.cpp: In function 'int besthub(int, int, int*, long long int)':
ricehub.cpp:14:15: warning: unused variable 'ans1' [-Wunused-variable]
   14 |     int ans=0,ans1=0;
      |               ^~~~

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