first commit

J01011 - BỘI SỐ CHUNG - ƯỚC SỐ CHUNG.java

@@ -0,0 +1,23 @@
+
+import java.util.Scanner;
+public class Main {
+
+    static long gcd(long a, long b){
+        if(b==0) return a;
+        return gcd(b,a%b);
+    }
+
+    static long lcm(long a,long b){
+        return a*b/gcd(a,b);
+    }
+
+    public static void main(String[] args) {
+        Scanner reader = new Scanner(System.in);
+        int t = reader.nextInt();
+        for (int i = 0; i < t; i++) {
+            int a=reader.nextInt(), b=reader.nextInt();
+            System.out.printf("%d %d\n",lcm(a,b),gcd(a,b));
+        }
+        reader.close();
+    }
+}