Problems
A xor B
A xor B
Two positive integers a and b are given. Apply the bitwise exclusive or operation to them.
Input data
Two positive integers a and b (a, b ≤ 10^9
).
Output data
Print the result of applying xor operation over the given numbers.
Examples
Input example #1
3 7
Output example #1
4
Input example #2
12 11
Output example #2
7