#include<stdio.h>
#include<ctype.h>
#include<string.h>
#define dim 36500
int n,i,k,m,nr;
char a[dim][17];
void sort1(int st,int dr,char a[17])
{
     int i=st,j=dr;
     char p=a[(st+dr)/2],aux;
     do
     {
          while(a[i]<p)
          i++;
          while(a[j]>p)
          j--;
          if(i<=j)
          {
                  aux=a[i];
                  a[i]=a[j];
                  a[j]=aux;
                  i++;
                  j--;
                  }
                  }
          while(i<=j);
          
          if(st<j)
                  sort1(st,j,a);
          if(i<dr)
                  sort1(i,dr,a);
}       
void sort2(int st,int dr)
{
     int i=st,j=dr;
     char b[17],aux[17];
     strcpy(b,a[(st+dr)/2]);
     do
     {
                            while(strcmp(a[i],b)<0)
                            i++;
                            while(strcmp(a[j],b)>0)
                            j--;
     if(i<=j)
     {
             strcpy(aux,a[i]);
             strcpy(a[i],a[j]);
             strcpy(a[j],aux);
             i++;
             j--;
             }
             }
             while(i<=j);
             if(st<j)
                     sort2(st,j);
             if(i<dr)
                     sort2(i,dr);
}
void read()
{
           scanf("%d",&n);
           gets(a[1]);
           for(i=1;i<=n;i++)
           {
                            gets(a[i]);
                            sort1(0,strlen(a[i])-1,a[i]);
                       //     printf("%s\n",a[i]);
                            }
           sort2(1,n);
}
void solve()
{
     for(i=1;i<=n;i++)
     {
                 //     printf("%d %d %s %d\n",i,strcmp(a[i-1],a[i]),a[i],nr);
                                       if((strcmp(a[i-1],a[i]) ||i-1==0) && ( strcmp(a[i+1],a[i]) || i==n))
                      nr++;
                      }
     printf("%d",nr);
}
int main ()
{
    freopen("restante.in","r",stdin);
    freopen("restante.out","w",stdout);
    read();
    solve();
return 0;
}