sum of 2 numbers in python

1sum(list(map(int,input().split())))
2

1a = int(input("Enter first number:"))
2b = int(input("Enter second number:"))
3sum = a+b
4print(sum)

1a = int(input())
2b = int(input())
3s = a+b
4print(S)

1def add(a, b):
2  return a + b
3