diff --git a/zad1/Main.class b/zad1/Main.class
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diff --git a/zad1/Main.java b/zad1/Main.java
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+++ b/zad1/Main.java
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+import java.util.Scanner;
+
+public class Main {
+
+    public static void main(String[] args) {
+        int n;
+        if(args.length == 0) {
+            System.out.println("Proszę podać n ");
+            Scanner scan = new Scanner(System.in);
+            n = scan.nextInt();
+        }
+        else{
+            n = Integer.parseInt(args[0]);
+        }
+        Ring ring = new Ring(n);
+        System.out.println(ring.findRingDetails());
+    }
+}
diff --git a/zad1/NWDCalculator.class b/zad1/NWDCalculator.class
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diff --git a/zad1/NWDCalculator.java b/zad1/NWDCalculator.java
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+++ b/zad1/NWDCalculator.java
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+public class NWDCalculator {
+    public static int findNWD(int a, int b) {
+        if (b == 0)
+            return a;
+        else {
+            return findNWD(b, a % b);
+        }
+    }
+}
diff --git a/zad1/Ring.class b/zad1/Ring.class
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