from uniPerm import perms
from math import log
import random
from sympy.core.sympify import sympify
from sympy.simplify.simplify import simplify
def con_base(n,b):
    out = []
    if n == 0:
        return [0]
    for p in range(int(log(n,b)),-1,-1):
        out.append(n//(b**p))
        n %= b**p
    return out
def zp(lst,n):
    l = []
    for i in range(n-len(lst)):
        l.append(0)
    return l + lst

def getInput(blah):
    sanitized = list(
        filter(
            lambda x: x,blah.split(' ')
            )
        )
    return list(
        map(
            lambda x: int(x),sanitized
            )
        )

def choose(lst,select):
    return list(map(lambda x: lst[x],select))

def rand_4():
    l = []
    for i in range(4):
        l.append(random.randint(0,20))
    return l