Submission #58758

#	Time	Username	Problem	Language	Result	Execution time	Memory
58758		Sherazin	Rice Hub (IOI11_ricehub)	C++14	100 / 100	34 ms	16040 KiB

ricehub

#include "ricehub.h"
#include <bits/stdc++.h>

using namespace std;

long long min(long long a,int b) {return a<b?a:b;}  

int besthub(int R, int L, int X[], long long B)
{
	long long qs[R];
	qs[0]=X[0];
	for(int i=1;i<R;i++) qs[i]=(qs[i-1]+X[i]);
	int l=0,r=R;
	int ret = 0;
	while(l<=r) {
		int mid=(l+r)>>1;
		int wm=mid>>1;
		long long mn = LLONG_MAX;
		for(int i=0;i<R-mid+1;i++) {
			if(mid==1) mn=min(mn,0);
			else if(mid==2) mn=min(mn,X[i+wm]-X[i+wm-1]);
			else {
				long long cost;
				if(mid&1) cost=qs[i+mid-1]-qs[i+wm]-qs[i+wm-1]+(i>0?qs[i-1]:0);
				else cost=qs[i+mid-1]-qs[i+wm]-qs[i+wm-1]+(i>0?qs[i-1]:0)+X[i+wm];
				mn=min(mn,cost);
			}
		}
		if(mn<=B) {
			ret=mid;
			l=mid+1;
		} else {
			r=mid-1;
		}
	}

	return ret;
}

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