#include<bits/stdc++.h>
using namespace std;
int a[100000010]={0};
int main()
{
	freopen("duela.in","r",stdin);
	freopen("duela.out","w",stdout);
	int n,r,b,c,i,j;
	cin>>n;
	b=0;
	for(i=1;i<=n;i++)
	{
		cin>>r;
		a[r]++;
		if(r>b)
		{
			b=r;
		}
	}
	for(i=1;i<=b;i++)
	{
		if(a[i]!=0)
		{
			c=a[i];
			break;
		}
	}
	for(i=i+1;i<=b;i++)
	{
		if(a[i]!=0)
		{
			c=max(c,a[i])-min(c,a[i]);
		}
	}
	cout<<c;
	return 0;
}