import java.io.*;

class Cv05Pr3 {
	static double m,n,a,b,x,y,e,f;
	
	public static void main (String [] arg){

		System.out.println("Program na zjisteni, zda bod lezi uvnitr, vne ci na elipse.");
		System.out.println();
		
		// Zadani hodnot m,n,a,b,x,y podle tematu
		System.out.println("Elipsa S(m,n)");
		System.out.print("  Zadej hodnotu m: ");
		m = VstupData.ctiDouble();
		System.out.print("  Zadej hodnotu n: ");
		n = VstupData.ctiDouble();
		System.out.println();

		System.out.println("Poloosy elipsy");
		System.out.print("  Zadej hodnotu poloosy a: ");
		a = VstupData.ctiDouble();
		if (a==0) {	System.out.println("Promena a obsahuje nebezpecnou hodnotu nula (a = 0). Chyba deleni nulou."); System.exit(0); }
		System.out.print("  Zadej hodnotu poloosy b: ");
		b = VstupData.ctiDouble();
		if (b==0) {	System.out.println("Promena b obsahuje nebezpecnou hodnotu nula (b = 0). Chyba deleni nulou."); System.exit(0); }
		System.out.println();

		System.out.println("Souradnice bodu X[x,y]");
		System.out.print("  Zadej hodnotu x: ");
		x = VstupData.ctiDouble();
		System.out.print("  Zadej hodnotu y: ");
		y = VstupData.ctiDouble();

		// Novy radek
		System.out.println();

		// Lezi bod na elipse??? Pokud ne, zjistime, zda lezi uvnitr
		if (Math.pow(x-m,2)/Math.pow(a,2)+Math.pow(y-m,2)/Math.pow(b,2)==1) {
			System.out.println("Bod X lezi na elipse.");
		} else {
			
			// vypocet e
			e = Math.sqrt(Math.pow(a,2)+Math.pow(b,2));
			
			// vypocet f
			f = Math.sqrt(Math.pow(a+x,2)+Math.pow(y,2)) + Math.sqrt(Math.pow(a-x,2)+Math.pow(y,2));
			
			if (2*e > f) {
				System.out.println("Bod X lezi uvnitr elipsy.");
			} else {
				System.out.println("Bod X lezi vne elipsy.");
			} 
		}				

	}
	
}