you give array num nonnegative integer num consider special exist number x exactly x number num greater equal xNotice x element numsReturn x array special return 1 it prove num special value x unique Example 1input num 35output 2explanation there 2 value 3 5 great equal 2example 2input num 00output 1explanation no number fit criterion xIf x 0 0 number x 2if x 1 1 number x 0if x 2 2 number x 0x great 2 number numsExample 3input num 04304output 3explanation there 3 value greater equal 3 constraints1 numslength 1000 numsi 1000