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