Submission #655654

#	Time	Username	Problem	Language	Result	Execution time	Memory
655654		Trumling	Rice Hub (IOI11_ricehub)	C++14	100 / 100	14 ms	724 KiB

ricehub

#include "ricehub.h"
#include<iostream>
#include<cmath>
using namespace std;
 
typedef long long ll;
#define pb push_back
#define F first
#define S second
#define enter cout<<'\n';
 
int besthub(int R, int L, int X[], long long B)
{
ll ans=1;
ll plus,l,r;
l=1;
r=R;
bool ok=false;
while(l<r)
{

ok=false;
plus=(l+r)/2+(l+r)%2;
bool pre=false;
ll curr=0;

for(int i=0;i<=R-plus;i++)
{
ll med;
if(!pre)
{
med=(i+i+plus-1)/2;
for(int j=i;j<i+plus;j++)
    curr+=abs(X[med]-X[j]);
 
pre=true;
}
else
{
    med++;
    ll dif=abs(X[med]-X[med-1]);
    curr+=abs(i-med)*dif;
    curr-=(plus-abs(i-med-1))*dif;
    curr+=abs(X[med]-X[i+plus-1]);
    curr-=abs(X[med-1]-X[i-1]);
}

if(curr<=B)
{
    ans=max(plus,ans);
    ok=true;
    break;
}

}
if(plus==l || plus==r)
break;
if(ok)
  l=plus;
else
  r=plus;
}
//cout<<'\n'<<ans<<'\n';
return ans;
}

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