답안 #719569

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
719569	2023-04-06T09:53:49 Z	mseebacher	쌀 창고 (IOI11_ricehub)	C++17	컴파일 오류	0 ms	0 KB

ricehub

#include <bits/stdc++.h> 

using namespace std;

int besthub(int R, int L, int x[], long long B)
{
	vector<long long> pref(R+1,0);
	for(int i = 0;i<R;i++){
		pref[i+1] = pref[i]+x[i];
	}
	int ans = 0;
	int l = 0;
	int r = R-1;
	int len;
	while(l+1<r){
		len = (l+r) >> 1;
		bool b = 0;
		for(int h = 0;h<R-len;h++){
			int j = h+len;
			int mid = (i+j) >> 1;
			long long cost = (long long)(mid-i)*x[mid]*1LL-(pref[mid]-pref[i]) ; // Seg unten
			cost += (long long)(pref[j+1]-pref[mid+1])-(j-mid)*x[mid]*1LL; // seg oben
				
			if(cost <= B) {
				ans = max(ans,j-i+1);
				b = 1;
			}
		}
		if(b) l = len+1;
		else r = len-1;
	}
  return ans;
}

Compilation message

ricehub.cpp: In function 'int besthub(int, int, int*, long long int)':
ricehub.cpp:20:15: error: 'i' was not declared in this scope
   20 |    int mid = (i+j) >> 1;
      |               ^