B

public static void main(String[] args) {	Tree drevo = new Tree();	long start = System.currentTimeMillis();	int i = 0, meja = 10000;	while ( i++ < meja) {		drevo.insert( (int)Math.random()*100 );	}	System.out.print( (System.currentTimeMillis()-start) + " milisekund" );}