#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;
}