Submission #28927

#	Time	Username	Problem	Language	Result	Execution time	Memory
28927		aybala	Rice Hub (IOI11_ricehub)	C++11	100 / 100	19 ms	6708 KiB

ricehub

#include "ricehub.h"
#include<bits/stdc++.h>
#define fori(a,b,c) for(a=b;a<c;a++)
#define ford(a,b,c) for(a=b;a>=c;a--)
#define pb push_back
#define pii pair<int,int>
#define mii map<int,int>
#define mp make_pair
#define pcc pair<char,char>
#define ll long long
#define pll pair<long long,long long>
#define fi first
#define se second
#define pss pair<short, short>
#define pq priority_queue
using namespace std;

ll sum[100004];

int besthub(int R, int L, int X[], long long B)
{
	int l,r;
	sum[0]=X[0];
	int i,j,k;
	fori(i,1,R){
		sum[i]+=sum[i-1]+(long long)X[i];
	}
	int ans=0;
	r=0;
	fori(l,0,R){

		while(r<R){
			int mid=(l+r)/2;
			ll b=0;
			b+=(long long)X[mid]*(mid-l);
			if(mid)
				b-=sum[mid-1];
			if(l)
				b+=sum[l-1];
			b+=(long long)sum[r]-sum[mid]-(long long)X[mid]*(r-mid);
			if(b>B)
				break;
			r++;			
		}
		ans=max(ans,r-l);
	}
	R=ans;
	return R;
}

Compilation message (stderr)

ricehub.cpp: In function 'int besthub(int, int, int*, long long int)':
ricehub.cpp:24:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j,k;
        ^
ricehub.cpp:24:10: warning: unused variable 'k' [-Wunused-variable]
  int i,j,k;
          ^

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