7. Write a program that reads an integer N from the keyboard computes and displays the sum of the numbers from N to (2 * N) if N is nonnegative. If N is a negative number, then it’s the sum of the numbers from (2 * N) to N. The starting and ending points are included in the sum.
# Code n = int(input()) x = 0 if n > 0: for i in range(n, 2*n+1): x += i else: for i in range(2*n, n+1): # for negative n, we need to reverse start & end of range x += i print(x)