Submission #157600

#	Time	Username	Problem	Language	Result	Execution time	Memory
157600		RoundMango	Rice Hub (IOI11_ricehub)	C++14	100 / 100	20 ms	2552 KiB

ricehub

#include <bits/stdc++.h>
using namespace std;
long long a[10000005], sum[10000005], n, l = 1, r, md, mx, xx, ans;
int besthub(int R, int L, int a[], long long b) {
	for (int i = 1; i <= R; i++) 
		sum[i] = sum[i-1] + a[i-1];
	r = R;
	while (l < r) {
		ans = b+1;
		md = (l+r+1)>>1;
		for (int i = md; i <= R; i++) {
			n = i-md+1;
			mx = (i+n+1)>>1;
			xx = sum[i] - sum[mx] - (i-mx)*a[mx-1] + a[mx-1]*(mx-n) - sum[mx-1] + sum[n-1];
			ans = min(ans, xx);
		}
	    if (ans <= b) l = md;
		else r = md-1;
	}
	return l;
}

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