reiwa ctf zero ha?

reiwa_q.py

# -*- coding: utf-8 -*-

import socket

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('zerois-o-reiwa.seccon.jp', 23615))
for num in range(100):
    data = ''
    while data[:2] != '0=':
        data = s.recv(1024)
        if data[0] == 'W':
            print(data)
            exit()

    q = data[2:-3].replace('?', '{}')
    dic = {}
    exec('a0={}'.format(q.format(0)), {}, dic)
    exec('a1={}'.format(q.format(1)), {}, dic)

    m = dic['a0'] - dic['a1']
    if m == 0:
        a = 0
    else:
        a = int(dic['a0'] / m)
    print(num, q, dic, m, a)
    s.send(b'{}'.format(a))

while True:
    data = s.recv(1024)
    if data:
        print(data)