from aoc.input import get_input
import collections
import re
from aoc.partselector import part_one, part_two

def pw(line):
    return line.strip()

def p1():
    inp = get_input(pw)
    groups = []
    group = []
    for i in inp:
        if i == '':
            groups.append(group)
            group = []
        else:
            group.append(i)

    count = 0
    for g in groups:
        answers = set()
        for p in g:
            for x in p:
                answers.add(x)
        count += len(answers)
    print(count)
    return groups


def p2(r):
    count = 0
    for g in r:
        s = set(g[0])
        for p in g[1:]:
            s = s.intersection(p)
        count += len(s)
    print(count)
    return 0

if part_one():
    result1 = p1()


if part_two():
    p2(result1)