Competitions

# Week 2: November 16 – 22. Conditional statement. Part 3

# Sum of odd numbers

Find the sum of odd numbers in the range from **а** to **b**.

#### Input

Two integers **a** and **b**, not greater than `10`

by absolute value.^{9}

#### Output

Print the sum of odd numbers in the range from **а** to **b**.

Input example #1

2 5

Output example #1

8

Input example #13

-1987655734 1999999734

Output example #13

12305904774248000