import java.util.*; import java.io.*; public class Main { static public class InputIterator{ ArrayList inputLine = new ArrayList(1024); int index = 0; int max; InputIterator(){ BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); while(true){ String read; try{ read = br.readLine(); }catch(IOException e){ read = null; } if(read != null){ inputLine.add(read); }else{ break; } } max = inputLine.size(); } public boolean hasNext(){return (index < max);} public String next(){ if(hasNext()){ String returnStr = inputLine.get(index); index++; return returnStr; }else{ throw new IndexOutOfBoundsException("これ以上入力はないよ。"); } } } static InputIterator ii = new InputIterator(); static void myout(Object t){System.out.println(t);} static void myerr(Object t){System.err.println(t);} static String next(){return ii.next();} static int nextInt(){return Integer.parseInt(next());} static long nextLong(){return Long.parseLong(next());} static String[] nextStrArray(){return myHanSpSplit(next());} static String[] nextCharArray(){return mySingleSplit(next());} static String[] mySingleSplit(String str){return str.split("");} static String[] myHanSpSplit(String str){return str.split(" ");} static ArrayList nextIntArray(){ ArrayList ret = new ArrayList(); String[] input = nextStrArray(); for(int i = 0; i < input.length; i++){ ret.add(Integer.parseInt(input[i])); } return ret; } static ArrayList nextLongArray(){ ArrayList ret = new ArrayList(); String[] input = nextStrArray(); for(int i = 0; i < input.length; i++){ ret.add(Long.parseLong(input[i])); } return ret; } static String kaigyoToStr(String[] list){return String.join("\n",list);} static String kaigyoToStr(ArrayList list){return String.join("\n",list);} static String hanSpToStr(String[] list){return String.join(" ",list);} static String hanSpToStr(ArrayList list){return String.join(" ",list);} public static void main(String[] args){ ArrayList one = nextLongArray(); long A = one.get(0); long B = one.get(1); long G = gcd(A,B); long output = gcd(A / G + A / G, G) * G; myout(output); } //Method addition frame start public static long gcd(long m, long n) {return n != 0 ? gcd(n, m % n) : m;} //Method addition frame end }