Submission #317135

#	Time	Username	Problem	Language	Result	Execution time	Memory
317135		nandonathaniel	Rice Hub (IOI11_ricehub)	C++14	100 / 100	19 ms	1792 KiB

ricehub

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

int besthub(int R, int L, int X[], long long B)
{
	int ki=1,ka=R,res;
	while(ki<=ka){
		int mid=(ki+ka)/2;
		long long cost=0;
		int idx=(mid-1)/2;
		for(int i=0;i<mid;i++)cost+=abs(X[i]-X[idx]);
		long long mini=cost;
		for(int i=mid;i<R;i++){
			cost-=abs(X[i-mid]-X[idx]);
			idx++;
			int selisih=X[idx]-X[idx-1];
			cost-=(1LL*(i-idx)*selisih);
			cost+=(1LL*(mid-1-i+idx)*selisih);
			cost+=abs(X[i]-X[idx]);
			mini=min(mini,cost);
		}
		if(mini<=B){
			res=mid;
			ki=mid+1;
		}
		else ka=mid-1;
	}
	return res;
}

Compilation message (stderr)

ricehub.cpp: In function 'int besthub(int, int, int*, long long int)':
ricehub.cpp:29:9: warning: 'res' may be used uninitialized in this function [-Wmaybe-uninitialized]
   29 |  return res;
      |         ^~~

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