Class
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 1310 Accepted Submission(s): 817
Problem Description
Avin has two integers a, b (1 ≤ a, b ≤ 1, 000).
Given x = a + b and y = a - b, can you calculate a*b?
Given x = a + b and y = a - b, can you calculate a*b?
Input
The first line contains two integers x, y.
Output
Print the result of a*b.
Sample Input
4 2
Sample Output
3