public class Demonstration {


	public static void main(String[] args) {

		String[][] birds = {{"Tit","8","1","5"},{"Robin","7","2","3"}};
		birdsSale(birds);
		birdsLive(birds);
		birdsLess(birds);
		Dohod(birds);
		titSale(birds,2);
		System.out.println(birds[0][1]+"_"+birds[0][3]);
		System.out.println("Do-"+birds[0][1]);
		titZavoz(birds,2);
		System.out.println("; Posle-"+birds[0][1]);
			}

	static String birdsSale(String[][] a){
		 System.out.println("Before sale"+a[0][0]+":"+a[0][3]);
		 System.out.println("Before sale"+a[1][0]+":"+a[1][3]);
		 return a[0][3]+"_"+a[1][3];}

	static String birdsLive(String[][] a){
		System.out.println("After sale"+a[0][0]+":"+a[0][1]);
		System.out.println("After sale"+a[1][0]+":"+a[1][1]);
		return a[1][1]+"_"+a[1][1];}

	static String birdsLess(String[][] a){
		if(Integer.parseInt(a[0][1])>Integer.parseInt(a[1][1])){
			System.out.println("Ostatok do"+a[1][0]+"Ostatok posle"+a[0][0]+":");
			return a[0][1];}
		else if(Integer.parseInt(a[0][1])< Integer.parseInt(a[1][1])){
			System.out.println("Ostatok do"+a[0][0]+"Ostatok posle"+a[1][0]+":");
			return a[0][0];}
		else{return "Rezalt.";}}

	static double Dohod	(String[][] a){
		System.out.println("Zarobleno"+String.valueOf((double)(Integer.parseInt(a[0][2])*Integer.parseInt(a[0][3])
				+Integer.parseInt(a[1][2])*Integer.parseInt(a[1][3])))+":");
		return(double)(Integer.parseInt(a[0][2])*Integer.parseInt(a[0][3])
				+Integer.parseInt(a[1][2])*Integer.parseInt(a[1][3]));}

	static void titSale(String[][]a,int k){
		if(k <= Integer.parseInt(a[0][1])){
			a[0][1]=String.valueOf(Integer.parseInt(a[0][1])-k);
			a[0][3]=String.valueOf(Integer.parseInt(a[0][3])+k);}}

	static void robinSale(String[][]a,int k){
		if(k <= Integer.parseInt(a[1][1])){
			a[1][1]=String.valueOf(Integer.parseInt(a[1][1])-k);
			a[1][3]=String.valueOf(Integer.parseInt(a[1][3])+k);}}

	static void titZavoz(String[][]a,int k){
		a[0][1] = String.valueOf(Integer.parseInt(a[0][1])+k);}

	static void robinZavoz(String[][]a,int k){
		a[1][1] = String.valueOf(Integer.parseInt(a[1][1])+k);}

}