safer1

 import java.util.*;public class NSD{public static void main(String[] args) {//	Scanner sc = new Scanner(System.in);//	sc.useLocale(Locale.US);int a, b, d;//System.out.print("Zadej a: ");//	int a = sc.nextInt();//System.out.print("Zadej b: ");//	int b = sc.nextInt();a = 6;b = 2;if ( a > b) {d = a;} else {d = b;}while ((a % d != 0) && (b % d != 0))d--;System.out.println("Nejvetsi spolecny delitel a, b je " + d);}}