Submission #111646

#	Time	Username	Problem	Language	Result	Execution time	Memory
111646		ly20	Rice Hub (IOI11_ricehub)	C++14	0 / 100	5 ms	1024 KiB

ricehub

#include<bits/stdc++.h>
using namespace std;
const int MAXN=112345;
const long long MAXL=1123456789;
long long se[MAXN],sd[MAXN],v[MAXN];
int besthub(int r, int l, int x[], long long b)
{
	for(int i=0;i<r;i++)v[i]=x[i];
	se[0]=v[0];
	for(int i=1;i<r;i++)
	{
		se[i]=se[i-1]+v[i];
	}
	sd[r-1]=l-v[r-1];
	for(int i=r-2;i>=0;i--)sd[i]=sd[i+1]+v[i];
	int resp=0;
	int ini=0,fim=0;
	while(fim<r)
	{
		int m=(ini+fim)/2;
		long long cost=se[r]-se[m]-(r-m+1)*v[m]+sd[l]-sd[m]-(l-m+1)*(l-v[m]);
		if(cost<=b)
		{
			resp=max(resp,fim-ini+1);
			fim++;
		}
		else ini++;
	}
	return resp;
}

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