Submission #50929

#	Time	Username	Problem	Language	Result	Execution time	Memory
50929		win11905	Rice Hub (IOI11_ricehub)	C++11	0 / 100	1078 ms	736 KiB

ricehub

#include <bits/stdc++.h>
#include "ricehub.h"
#define long long long
using namespace std;

const int N = 1e5+5;

long pref[N], A[N];

int besthub(int R, int L, int X[], long B) {
	for(int i = 1; i <= R; ++i) pref[i] = pref[i-1] + X[i-1];
	int l = 1, r = R;
	auto calc = [&](int m, int l, int r) {
		long lhs = ((m-l+1) * pref[m]) - (pref[m] - pref[l-1]);
		long rhs = (pref[r] - pref[m-1]) - ((r-m+1) * pref[m]);
		return lhs + rhs <= B;
	};
	while(l < r) {
		int m = (l + r) >> 1;
		bool st = false;
		for(int l = 1, r = m; r <= R; l++, r++) {
			int z = (l + r) >> 1;
			st |= calc(z, l, r);
		}
		if(st) l = m;
		else r = m - 1;
	}
	return l;
}

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