#include"stdio.h"
int main( )
{
int n,a,b,e,d;
a=b=e=d=0;
char c;
scanf("%d",&n);
for(int i=0;i<n;i++)
{
c=getchar();
if((c>='a'&&c<='z')||(c>='A'&&c<='Z'))a++;
else if(c>='0'&&c<='9')b++;
else if(c=='\n'||c==' ')e++;
else d++;
}
printf("a=%d b=%d e=%d d=%d",a,b,e,d);
return 0;
}