用自定义函数来解决

解题思路:

注意事项:

参考代码:

a,b,c = map(int,input().split())

def sumhe(a,b,c):

    suma = 0

    sumb = 0

    sumc = 0

    for i in range(1,a+1):

        suma += i

    for i in range(1,b+1):

        sumb += i**2

    for i in range(1,c+1):

        sumc += 1/i

    return suma+sumb+sumc

print('%.2f'%sumhe(a,b,c))