题解 | 压缩二维码

import sys

n = int(input())
data = []
for i in range(2 ** n):
    data.append(input())

_str = "".join(data)


for i in range(len(_str) // 4):
    if _str[i * 4: i * 4 + 4] == "....":
        print("0", end = " ")
    elif _str[i * 4: i * 4 + 4] == "...#":
        print("1", end = " ")
    elif _str[i * 4: i * 4 + 4] == "..#.":
        print("2", end = " ")
    elif _str[i * 4: i * 4 + 4] == "..##":
        print("3", end = " ")
    elif _str[i * 4: i * 4 + 4] == ".#..":
        print("4", end = " ")
    elif _str[i * 4: i * 4 + 4] == ".#.#":
        print("5", end = " ")
    elif _str[i * 4: i * 4 + 4] == ".##.":
        print("6", end = " ")
    elif _str[i * 4: i * 4 + 4] == ".###":
        print("7", end = " ")
    elif _str[i * 4: i * 4 + 4] == "#...":
        print("8", end = " ")
    elif _str[i * 4: i * 4 + 4] == "#..#":
        print("9", end = " ")
    elif _str[i * 4: i * 4 + 4] == "#.#.":
        print("10", end = " ")
    elif _str[i * 4: i * 4 + 4] == "#.##":
        print("11", end = " ")
    elif _str[i * 4: i * 4 + 4] == "##..":
        print("12", end = " ")
    elif _str[i * 4: i * 4 + 4] == "##.#":
        print("13", end = " ")
    elif _str[i * 4: i * 4 + 4] == "###.":
        print("14", end = " ")
    elif _str[i * 4: i * 4 + 4] == "####":
        print("15", end = " ")