aoc

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import itertools


W = 25
H = 6


def get_layers(data):
    layers = []

    while len(data):
        layers.append(data[:W * H])
        data = data[W * H:]

    return layers


def main():
    data = open('input').read()
    layers = get_layers(data)

    top = layers[0]
    result = []

    for i, d in enumerate(top):
        if d in ['1', '0']:
            result.append(d)
        else:
            o = None
            c = 1
            while True:
                l = layers[c]
                candidate = l[i]
                if candidate == '2':
                    c += 1
                    continue
                else:
                    result.append(candidate)
                    break

    a = []

    for r in result:
        if r == '1':
            a.append('😀')
        else:
            a.append('🖤')

    for x in itertools.count(step=W):
        if x >= len(result):
            break
        row = a[x:x+W]
        print(''.join(row))


if __name__ == '__main__':
    main()