Matrix XOR

Chef has a *tasty ingredient* ― an integer $K$. He defines a *tasty matrix* $A$ with $N$ rows (numbered $1$ through $N$) and $M$ columns (numbered $1$ through $M$) as $A_{i, j} = K + i + j$ for each valid $i,j$. Currently, Chef is busy in the kitchen making this tasty matrix. Help him find the bitwise XOR of all elements of this matrix. ### Input - The first line of the input contains a sin