#include <stdio.h>
#define MAXS 15

void StringCount( char s[] );
void ReadString( char s[] ); /* 由裁判实现，略去不表 */

int main()
{
    char s[MAXS];

    ReadString(s);
    StringCount(s);

    return 0;
}

/* Your function will be put here */

void StringCount( char s[] )
{
    int i;
    int letter=0;
    int blank=0;
    int digit=0;
    int other=0;
    for(i=0;i<strlen(s);i++)
    {
       if(s[i]>='a'&&s[i]<='z'||s[i]>='A'&&s[i]<='Z') letter++;
       else if(s[i]==' '||s[i]=='\n') blank++;
       else if(s[i]>='0'&&s[i]<='9') digit++;
       else other++;
    }
    printf("letter = %d, blank = %d, digit = %d, other = %d\n",letter,blank,digit,other);
}