Submission #121026

#	Time	Username	Problem	Language	Result	Execution time	Memory
121026		turbat	Rice Hub (IOI11_ricehub)	C++14	100 / 100	47 ms	2552 KiB

ricehub

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

long long s[100005];

long long can(int l, int r){
	int mid = (l + r) / 2;
	if ((r - l) % 2 == 0) return s[r] + s[l - 1] - s[mid] - s[mid - 1];		
	return s[r] + s[l - 1] - 2 * s[mid];
}

int besthub(int R, int L, int X[], long long B){
	int ans = 0;
	for (int i = 1;i <= R;i++) s[i] = s[i - 1] + X[i - 1];
	for (int i = 1;i <= R;i++){
		int l = i, r = R, mid;
		while (l != r){
			mid = (l + r + 1) / 2;
			if (can(i, mid) <= B) l = mid;
			else r = mid - 1;
		}
		ans = max(ans, l - i + 1);
	}
  return ans;
}

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