```from pwn import *nc = remote('challs.xmas.htsp.ro', 6051)for i in range(7):    chall = nc.recvline().decode().strip()i = 0while True:    test = nc.recvline().decode().strip()    print(test)    exec(nc.recvline().decode().strip())    exec(nc.recvline().decode().strip())    exec(nc.recvline().decode().strip())    array = sorted(array)    answer = str(array[:k1]) + '; ' + str(array[-k2:][::-1])    answer = answer.replace('[', '')    answer = answer.replace(']', '')    nc.sendline(answer)    i += 1    if i == 50:        check = nc.recv().decode().strip()        print(check)        break    else:        check = nc.recvline().decode().strip()        print(check)``````[x] Opening connection to challs.xmas.htsp.ro on port 6051[x] Opening connection to challs.xmas.htsp.ro on port 6051: Trying 149.28.40.196[+] Opening connection to challs.xmas.htsp.ro on port 6051: DoneTest number: 1/50Good, that's right!Test number: 2/50Good, that's right!Test number: 3/50Good, that's right!.........Test number: 46/50Good, that's right!Test number: 47/50Good, that's right!Test number: 48/50Good, that's right!Test number: 49/50Good, that's right!Test number: 50/50Good, that's right!Those are some was lightning quick reflexes you've got there! Here's your flag: X-MAS{th15_i5_4_h34p_pr0bl3m_bu7_17'5_n0t_4_pwn_ch41l}``````X-MAS{th15_i5_4_h34p_pr0bl3m_bu7_17'5_n0t_4_pwn_ch41l}```