BUUCTF:[MRCTF2020]不眠之夜

题目来源:https://buuoj.cn/challenges#[MRCTF2020]%E4%B8%8D%E7%9C%A0%E4%B9%8B%E5%A4%9C

拼图

flag{Why_4re_U_5o_ShuL1an??}