Submission #139151

#	Time	Username	Problem	Language	Result	Execution time	Memory
139151		claudy	Rice Hub (IOI11_ricehub)	C++14	68 / 100	18 ms	1144 KiB

ricehub

# include "ricehub.h"
# include "bits/stdc++.h"
using namespace std;

int a[1 << 17];

int besthub(int n, int useless, int v[], long long B)
{
# define int long long
	int l = 1;
	int r = n;
	for(int i = 1;i <= n;i++)
	{
		a[i] = v[i - 1];
		a[i] += a[i - 1];
	}
	while(l < r)
	{
		int len = (l + r + 1) / 2;
		bool ok = 0;
		for(int i = len;i <= n;i++)
		{
			int L = i - len + 1;
			int R = i;
			int mid = (L + R + 1) / 2;
			int f = 0;
			f += 1LL * (a[mid] - a[mid - 1]) * (mid - L) - a[mid - 1] + a[L - 1];
			f += a[R] - a[mid] - 1LL * (a[mid] - a[mid - 1]) * (R - mid);
			if(f <= B) ok = 1;
		}
		if(ok) l = len;
		else r = len - 1;
	}
	return l;
}

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