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