def problem1_3(n):
    return sum(range(n + 1))


x = problem1_3(5)
print(x)

083646ce96453eae6feb58ca7d5f9461df7f0157
<mask token>

def problem1_3(n):
    return sum(range(n + 1))


<mask token>

def problem1_3(n):
    return sum(range(n + 1))


<mask token>
print(x)

def problem1_3(n):
    return sum(range(n + 1))


x = problem1_3(5)
print(x)
