Submission #112523

#	Time	Username	Problem	Language	Result	Execution time	Memory
112523		nxteru	Rice Hub (IOI11_ricehub)	C++14	100 / 100	19 ms	3328 KiB

ricehub

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll n,x[100005],k,s[100005];
bool check(int m){
	ll l=1,r=m;
	for(ll i=1;i<=n;i++){
		while(abs(x[r+1]-x[i])<abs(x[i]-x[l]))l++,r++;
		if((s[r]-s[i])-(r-i)*x[i]+(i-l+1)*x[i]-(s[i]-s[l-1])<=k)return true;
	}
	return false;
}
int besthub(int R,int L,int*X,ll B){
	n=R,k=B;
	for(int i=1;i<=n;i++)x[i]=X[i-1],s[i]+=s[i-1],s[i]+=x[i];
	x[n+1]=2000000000;
	int l=1,r=n+1;
	while(r-l>1){
		int m=(l+r)/2;
		if(check(m))l=m;
		else r=m;
	}
	return l;
}

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