https://programmers.co.kr/learn/courses/30/lessons/12917
def solution(a, b):
answer = 0
for i in range(a, b+1):
answer += i
if a > b:
for i in range(b, a+1):
answer += i
return answer
print(solution(3, 5))
print(solution(3, 3))
print(solution(5, 3))
def solution(a, b):
return sum(range(min(a,b), max(a,b)+1))
print(solution(3, 5))
print(solution(3, 3))
print(solution(5, 3))