Do XOR of all element
res = 0 NEW_LINE for i in range ( 0 , M ) : NEW_LINE INDENT res = res ^ arr1 [ i ] ; NEW_LINE DEDENT for i in range ( 0 , N ) : NEW_LINE INDENT res = res ^ arr2 [ i ] NEW_LINE DEDENT print ( " Missing ▁ element ▁ is " , res ) NEW_LINE