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data = [dat.strip() for dat in open("input").read().split("\n") if dat != '']
def calc(a):
return ord(a) - (ord('a') - 1 if a.islower() else ord('A') - 27)
def part1():
res = 0
for line in data:
h = len(line)//2
comp1 = set(line[h:])
comp2 = set(line[:h])
inter = comp1.intersection(comp2).pop()
res += calc(inter)
return res
def part2():
res = 0
for i in range(0, len(data), 3):
common = set(data[i]).intersection(data[i+1]).intersection(data[i+2]).pop()
res += calc(common)
return res
print(f"Part 1: {part1()}")
print(f"Part 2: {part2()}")
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