def solution(a, b):
if a < b:
numbers = [number for number in range(a, b+1)]
return sum(numbers)
else:
numbers = [number for number in range(b, a+1)]
return sum(numbers)
def adder(a, b):
# 함수를 완성하세요
if a > b: a, b = b, a
return sum(range(a,b+1))