• brainflakintegerserver.py

#!/usr/bin/python3
import http.server
from time import sleep

N=25001
numbers = ["()" * i for i in range(N)]

def tryi(n, s):
    if n < N and len(numbers[n]) > len(s):
        numbers[n] = s

for i in range(2, N):
    for j in range(1, 8):
        if i + j >= N:
            break
        tryi(i, "%s[%s]" % (numbers[i + j], numbers[j]))
    tryi(i + 1, "%s()" % numbers[i])
    tryi(i * 2, "(%s){}" % numbers[i])
    tryi(i * 3, "((%s)){}{}" % numbers[i])
    tryi(i * 3 + 2, "((%s)()){}{}" % numbers[i])
    for l in range(1, int(i**.5) + 1):
        if not i % l:
            j = 0
            k = ((i + j + j) * i / l + i) / 2
            if k % 1:
                continue
            k = int(k)
            while k < N:
                tryi(k, "(%s){%s({}[%s])}{}" % (numbers[i], numbers[j], numbers[l]))
                j += 1
                k = ((i + j + j) * i / l + i) / 2
                if k % 1:
                    continue
                k = int(k)

length = 0

# for prime in primes:
    # print("(%s)" % numbers[prime])
    # length += 2 + len(numbers[prime])

# print("Total length primes 1 to %s:" % N, length)
print("Total length 1 to %s:" % N, sum(len(n) for n in numbers))

def tryint(s):
    try:
        return int(s)
    except:
        return None

def reverse(n):
    s = "(%s)"
    while n >= N:
        if not (n - 2) % 3:
            s = s % "((%s)()){}{}"
            n = (n - 2) // 3
        elif not n % 3:
            s = s % "((%s)){}{}"
            n //= 3
        elif not n % 2:
            s = s % "(%s){}"
            n //= 2
        else:
            s = s % "%s()"
            n -= 1
    return s % numbers[n]

class Handler(http.server.BaseHTTPRequestHandler):
    def do_HEAD(s):
        s.send_response(200)
        s.send_header("Content-type", "text/html")
        s.end_headers()

    def do_GET(s):
        s.send_response(200)
        s.send_header("Content-type", "text/html")
        s.end_headers()
        s.wfile.write(bytes(
            "<pre>%s</pre>" % reverse(int(s.path[1:]))
            if tryint(s.path[1:]) is not None else
            "Invalid path",
            "ascii"
        ))

httpd = http.server.HTTPServer(("", 8000), Handler)
httpd.serve_forever()