Sum Squares

Problem Description Given two numbers x and y, find the squares of x, x+1, x+2, ... , x+n where x+n=y. After calculating the squares of all those numbers, find the difference between every two consecutive squares. You will get n such numbers. Now, square the n numbers that you get and add them. Display the result mod 109+7. Note that always x Input The first line of input contains an integer T