1 ~ 100 somme
'''
sum = 0
def sub_sum(n):
if n == 0:
return 0
else:
sum = sub_sum(n-1) + n
return sum
result = sub_sum(100)
print(result)
'''
def sub_sum(n):
count = 0
sum = 0
while count < n:
count = count + 1
sum = sum + count
return sum
result = sub_sum(100)
print(result)