#include<stdio.h>
int main()
{
    char section;
    char roll;
    char blood;
    scanf("%c",&section);
    scanf("%c",&roll);
    scanf(" %c",&blood);
    if(section >'A' && section <'Z'&& roll >'1' && roll<'9' && (blood=='A'||blood=='B'||blood=='O'))
{
    printf("Section: %c,"Roll Number: %c,"Blood Group: %c\n",section,roll,blood);
}
else{
    printf("invalid input\n");
}
return 0;
}