d = dict([(i, {}) for i in range(256)])

def main():
    f = open('out')
    counter = 0
    progress = 1
    while True:
        if counter == progress:
            progress *= 2
            print counter
        next = f.readline()
        if not next:
            break
        if next == '\n':
            previous = None
        try:
            next = next[:-1]
            v = int(next)
            if v >= 256:
                raise ValueError
            if previous is not None:
                try:
                    d[previous][v] += 1
                except KeyError:
                    d[previous][v] = 1
            previous = v
        except ValueError:
            pass
        counter += 1

if __name__ == '__main__':
    main()