Advent of code - Day 2 - First task

my_sum = 0

#  Elf -> A - Rock, B - Peper, C - Scissor

with open("input_data.txt", "r") as file:
    for line in file.readlines():

        if line[2] == 'Y':   # rock
            my_sum += 2
            if line[0] == 'A':
                my_sum += 6
            elif line[0] == 'B':
                my_sum += 3

        elif line[2] == 'X':  # peper
            my_sum += 1
            if line[0] == 'C':
                my_sum += 6
            elif line[0] == 'A':
                my_sum += 3

        elif line[2] == 'Z':   # scissor
            my_sum += 3
            if line[0] == 'C':
                my_sum += 3
            elif line[0] == 'B':
                my_sum += 6

print(my_sum)