#include<stdio.h>
int main()
{
    char section;
    int roll_number;
    char blood_group;
    printf("section:C\n");
    scanf("%d",&section);
    printf("roll_number:2\n");
    scanf("%d",&roll_number);
    printf("blood group:B\n");
    scanf("%d",&blood_group);
    return 0;
}