Problems
Sum a*a + ... + b * b
Sum a*a + ... + b * b
Given two positive integers a and b, find the sum a * a + ... + b * b.
Input
Two positive integers a and b (1 ≤ a ≤ b ≤ 1000).
Output
Print the value of the given sum.
Input example #1
3 7
Output example #1
135