#include<stdio.h>
#include<ctype.h>
int main()
{
    char a;
    scanf("%c", &a);
    if(isupper(a))
    {
        printf("The character is: ",a);
    }
    else if(islower(a))
    {
        printf("The character is: ",a);
    }
    else
    {
        printf("Invalid input");
    }
    return 0;
}