Submission #58343

#	Time	Username	Problem	Language	Result	Execution time	Memory
58343		PeppaPig	Rice Hub (IOI11_ricehub)	C++14	68 / 100	6 ms	764 KiB

ricehub

//#include "ricehub.h"
#include <bits/stdc++.h>

using namespace std;

const int N = 5e3 + 5;

long long sum[N];

long long min(long long a, int b) { return a < b ? a : b; }

int besthub(int R, int L, int X[], long long B)
{
	for(int i = 1; i <= R; i++) sum[i] = sum[i - 1] + X[i - 1];
	int res = 0;
	int l = 0, r = R;
	while(l <= r) {
		int mid = (l + r) >> 1;
		int m = mid >> 1;
		long long ret = LLONG_MAX;
		for(int i = 1; i <= R - mid + 1; i++) {
			if(mid == 1) ret = min(ret, 0);
			if(mid == 2) ret = min(ret, X[i] - X[i - 1]);
			else {
				long long t = sum[i + mid - 1] - sum[i + m] - sum[i + m - 1] + sum[i - 1];
				if(mid & 1) ret = min(ret, t);
				else ret = min(ret, t + X[i + m - 1]);
			}
		}
		if(ret <= B) res = mid, l = mid + 1;
		else r = mid - 1;
	}

	return res;
}

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