def name_to_number(name):
    if name == 'rock':
        return 0
    elif name == 'Spock':
        return 1
    elif name == 'paper':
        return 2
    elif name == 'lizard':
        return 3
    elif name == 'scissors':
        return 4
    else:
        return 999

    # convert name to number using if/elif/else
    # don't forget to return the result!
print name_to_number('Spock')