输入3个不超过100的整数A,B和C,以C为步长生成A到B的数字序列,然后输出数字序列的和
def fun(a,b,c):
return sum(range(a,b+1,c))
A = int(input())
B = int(input())
C = int(input())
sum1 = 0
# list1 = []
for i in range(A,B+1,C):
# list1.append(i)
sum1 += i
# print(list1)
print(sum1)