#include <stdio.h>
int main()
{
char ch;
int a=0,b=0,c=0;
ch=getchar();
while(ch!='\n')
{
if ((ch>='A'&&ch<='Z')||(ch>='a'&&ch<='z'))
{
ch=getchar();
a++;
}
else if(ch>='0'&&ch<='9')
{
ch=getchar();
b++;
}
else
{
ch=getchar();
c++;
}
}
printf("letter:%d\n",a);
printf("digit:%d\n",b);
printf("other:%d\n",c);
return 0;
}