A xor B
Execution time limit is 1 second
Runtime memory usage limit is 128 megabytes
Two positive integers a and b are given. Apply the bitwise exclusive or operation to them.
Input
Two positive integers a and b (a, b ≤ 10^9).
Output
Print the result of applying xor operation over the given numbers.
Examples
Input #1
Answer #1
Input #2
Answer #2
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