Submission #64645

#	Time	Username	Problem	Language	Result	Execution time	Memory
64645		zetapi	Dancing Elephants (IOI11_elephants)	C++14	26 / 100	9041 ms	5896 KiB

elephants

#include <elephants.h>

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

#define pb  push_back
#define mp  make_pair
#define ll  long long
#define itr ::iterator 

typedef pair<int,int>  pii;

const int MAX=1e6;

int N,L,start,ptr,arr[MAX],nxt[MAX],pos[MAX];

void init(int n, int l, int X[])
{
  	N=n;
  	L=l;
  	ptr=N;
  	start=1;
  	for(int A=1;A<=N;A++)
  	{
  		pos[A]=A;
  		nxt[A]=A+1;
  		arr[A]=X[A-1];
  	}
  	nxt[N]=0;
  	return ;
}

int cal()
{
	int cur=arr[start],res=1;
	for(int A=start;A>0;A=nxt[A])
	{
		if(arr[A]-cur>L)
		{
			cur=arr[A];
			res++;
		}
	}
	return res;
}

int update(int i, int y)
{
	if(N==1)
		return 1;
	i++;
	++ptr;
	if(start==pos[i])
		start=nxt[start];
	else
	{
		for(int A=start;A>0;A=nxt[A])
		{
			if(nxt[A]==pos[i])
			{
				nxt[A]=nxt[nxt[A]];
				break;
			}
		}
	}
	pos[i]=ptr;
	arr[ptr]=y;
	if(y<arr[start])
	{
		nxt[ptr]=start;
		start=ptr;
	}
	else
	{
		int lol=0;
		for(int A=start;A>0;A=nxt[A])
		{
			if(y>arr[A])
				lol=A;
		}
		nxt[ptr]=nxt[lol];
		nxt[lol]=ptr;
	}
	return cal();
}

/*signed main()
{
	ios_base::sync_with_stdio(false);

	int X[]={10,15,17,20};
	init(4,10,X);
	cout<<update(2,16)<<"\n";	
	cout<<update(1,25)<<"\n";
	cout<<update(3,35)<<"\n";
	cout<<update(0,38)<<"\n";
	cout<<update(2,0)<<"\n";
	return 0;
}*/

• Subtask 1: 10 / 10
• Subtask 2: 16 / 16
• Subtask 3: 0 / 24
• Subtask 4: 0 / 47
• Subtask 5: 0 / 3