day3 aoc

day3.py

def common(str1, str2,str3: None):
    if not str3:
        return sum([ (ord(val)-ord('a')+1) if val.islower() else (ord(val)-ord('A')+27) for val in list(set(str1)&set(str2))])
    else:
        return sum([ (ord(val)-ord('a')+1) if val.islower() else (ord(val)-ord('A')+27) for val in list(set(str1)&set(str2)&set(str3))])
     
def run1():
    data = open('input.txt', 'r').read().split('\n')
    return sum([common(line[0:(len(line)//2)], line[(len(line)//2):], None) for line in data])

def run2():
    data = open('input.txt', 'r').read().split('\n')
    return sum([common(data[i], data[i+1], data[i+2]) for i in  range(0, len(data), 3)])


if __name__ == "__main__":
    print(run1())
    print(run2())