#include <stdio.h>
#include <string.h>
void px (char s1[]);
char s1[10000][101]={0};
int main ()
{
	int n,m,i,k = 0;
	scanf ("%d",&n);
	for (i = 0;i<n;i++)
	scanf ("%s",s1[i]);
	for (i = 0;i<n;i++)
	{
		px(s1[i]);
	}
	for (i = 0;i<n-1;i++)
	{
		if (s1[i][0]=='0')
		continue;
		for (m = i+1;m<n;m++)
		{
			if (strcmp(s1[i],s1[m])==0)
			{
				k++;
				s1[m][0]='0';//标记该单词已经分好类 
			}
		}
	}
	if (s1[n-1][0]!='0')
	k++;
	printf ("%d",k);
	return 0;
 } 
void px (char s1[])
{
	int i,n,k,m;
	for (i = 0;i<strlen(s1)-1;i++)
	{
		for (m = 0;m<strlen(s1)-i-1;m++)
		{
			if (s1[m]>s1[m+1])
			{
				char temp;
				temp = s1[m];
				s1[m]=s1[m+1];
				s1[m+1] = temp;
			}
		}
	}
	return ;
}