diff --git a/src/makeRobotAccountant.js b/src/makeRobotAccountant.js
index 38b9758a..b2f107ad 100644
--- a/src/makeRobotAccountant.js
+++ b/src/makeRobotAccountant.js
@@ -6,7 +6,20 @@
  */
 
 function makeRobotAccountant() {
-  // write code here
+  let counter = 0;
+
+  return function getSum(num1) {
+    return function(num2) {
+      counter++;
+
+      if (counter % 2 === 0 && counter > 3) {
+        return 'Bzzz... Error!';
+      }
+
+      return num1 + num2;
+    };
+  };
 }
 
 module.exports = makeRobotAccountant;
+