diff --git a/Lab 1/Lab_1.java b/Lab 1/Lab_1.java
new file mode 100644
index 0000000..8217562
--- /dev/null
+++ b/Lab 1/Lab_1.java	
@@ -0,0 +1,39 @@
+import java.util.Scanner;
+
+public class Lab_1 {
+    public static void main(String[] args) {
+        int n, m, a, b;
+        float s = 0;
+
+        Scanner input = new Scanner(System.in);
+        
+        System.out.print("Enter n: ");
+        n = input.nextInt();
+
+        System.out.print("Enter m: ");
+        m = input.nextInt();
+
+        do {
+            System.out.print("Enter a (can't be above n): ");
+            a = input.nextInt();
+        } while (a > n);
+
+        do {
+            System.out.print("Enter b (can't be above m): ");
+            b = input.nextInt();
+        } while (b > m);
+
+        if ((a <= 0) && (n >= 0)) {
+            System.out.println("Error, division by zero, shutting down!");
+            System.exit(1);
+        }
+
+        for (int i = a; i < n; i++) {
+            for (int j = b; j < m; j++) {
+                s += i * j / i;
+            }
+        }
+
+        System.out.println("S = " + s);
+    }
+}