Tổng các chữ số

import math
a=int(input())
b=int(input())
k=int(input())
p=int(input())

def bcnn(a,b):
return abs(a*b) // math.gcd(a,b)
n=bcnn(a,b)

def kq(n,k):
return n+kp
kq=n+kp

tong=0
while kq>0:
so_thu_nhat=kq % 10
kq = kq // 10
tong += so_thu_nhat

print(tong)