diff --git a/QUSTOJ/1023.java b/QUSTOJ/1023.java
new file mode 100644
index 0000000..3c7ce65
--- /dev/null
+++ b/QUSTOJ/1023.java
@@ -0,0 +1,11 @@
+import java.io.*;
+import java.math.BigInteger;
+import java.util.Scanner;
+public class Main {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
+        BigInteger a=sc.nextBigInteger();
+        BigInteger b=sc.nextBigInteger();
+        System.out.println(a.multiply(b).divide(a.gcd(b)));
+    }
+}