diff --git a/src/Lab1.java b/src/Lab1.java
new file mode 100644
index 0000000..bfe89b0
--- /dev/null
+++ b/src/Lab1.java
@@ -0,0 +1,34 @@
+public class Lab1 {
+    public static void main(String[] args) {
+        System.out.println( (double) 0 / 0 );
+        System.out.println( Math.sqrt(-1) );
+        double s = 0;
+        /*for (int i = 1; i <= 3; i++) { // 1) ��������� � i = 1, 2) ���� � <= 3, 3) �������� 䳿 � �� �����,
+            System.out.println(i);     // 4) �������������� � �� 1, 5) ����������� �� ����� 2
+//            s = s + i;
+            s += i;
+        }*/
+        /*int[] array = new int[2];
+        for (int i = 0; i < array.length; i++) {
+
+        }*/
+        final int A = -1;
+        final int B = 1;
+        final int N = 2;
+        final int M = 2;
+
+        final int C = 1;
+
+        for (int i = A; i <= N; i++) {
+            if (i + C == 0) { // todo optimize
+                System.out.println("Division by zero!");
+                break; //todo flag vs return;
+            }
+            for (int j = B; j <= M; j++) {
+                s += (double) (i + j) / (i + C);
+            }
+        }
+
+        System.out.println("s = " + s);
+    }
+}