Submission #744029

#	Time	Username	Problem	Language	Result	Execution time	Memory
744029		Sainen420	Rice Hub (IOI11_ricehub)	C++17	68 / 100	11 ms	2516 KiB

ricehub

#include "ricehub.h"
#include <bits/stdc++.h>
using namespace std;
using pi = pair<int,int>;

long long int qs[100005]={};
int ans=0;

int besthub(int R, int L, int X[], long long B)
{
  for(int i=1;i<=R;i++){
        qs[i]=qs[i-1]+X[i-1];
    }
    int l=1,r=R;
    long long cost;
    while(l<=r){
        int len=(r+l)>>1;
        bool v =false;
        //iterate start points
        //S=i,E=i+len-1,N=(s+e)/2
        int S,E,N;
        //cout << len << '=';
        for(int i=1;i<=(R-len+1);i++){
            S=i,E=i+len-1,N=(S+E+1)/2;
            cost = (X[N-1]*(N-1-S)) - qs[N-1] + qs[S-1] + qs[E] - qs[N] - ((E-N-1)*X[N-1]);
            //cout << cost << ' ';
            if(cost<=B){
                v=true;
                break;
            }
        }
        //cout << endl;
        if(v){
            ans=max(len,ans);
            l=len+1;
        }else{
            r=len-1;
        }
    }
  return ans;
}

• Subtask 1: 17 / 17
• Subtask 2: 25 / 25
• Subtask 3: 26 / 26
• Subtask 4: 0 / 32