Rectangle#8883
You are given four positive integers a, b, c, d. Determine if it is possible to form a rectangle with side lengths a, b, c, d. If such a rectangle exists, print the sum of all four numbers. Otherwise, print "No".
Four positive integers a, b, c, d, each not exceeding 10^9.
If the rectangle exists, print the sum of all numbers. Otherwise, print "No".
Example 1
Example 2