1015: [编程入门]求和训练

解题思路:

注意事项:

参考代码:

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

a1,b1,c1=0,0,0

for i in range(a+1):

    a1+=i

for j in range(b+1):

    b1+=j**2

for k in range(c+1):

    if k!=0:

        cl+=1/k

print("{:.2f}".format(a1+b1+c1))