diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..73f69e0
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+# Editor-based HTTP Client requests
+/httpRequests/
diff --git a/.idea/debugging-workshop.iml b/.idea/debugging-workshop.iml
new file mode 100644
index 0000000..5e764c4
--- /dev/null
+++ b/.idea/debugging-workshop.iml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="Go" enabled="true" />
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..7d32b4a
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/debugging-workshop.iml" filepath="$PROJECT_DIR$/.idea/debugging-workshop.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..9736b4c
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module github.com/ibnufirdaus/debugging-workshop
+
+go 1.15
diff --git a/main.go b/main.go
index b37c814..7d3122a 100644
--- a/main.go
+++ b/main.go
@@ -29,8 +29,8 @@ func main() {
 }
 
 func sender(c chan signalData) {
+	var signalData signalData // init once
 	for {
-		var signalData signalData
 		signalData.signal = generateSignal()
 		c <- signalData
 	}
@@ -95,6 +95,8 @@ func evaluateSignal(signal []int) string {
 
 func evaluateNode(node1, node2 int) int {
 	switch {
+	case node2 == 1: // if latest is 1, return 1
+		return 1
 	case node2 > node1:
 		return 1
 	case node2 < node1:
diff --git a/main_test.go b/main_test.go
index 95db6fe..a919366 100644
--- a/main_test.go
+++ b/main_test.go
@@ -54,6 +54,20 @@ func Test_evaluateSignal(t *testing.T) {
 			},
 			want: "good",
 		},
+		{
+			name: "good signal 2",
+			args: args{
+				signal: []int{0, 1, 1, 0, 1, 1},
+			},
+			want: "good",
+		},
+		{
+			name: "bad signal",
+			args: args{
+				signal: []int{1, 1, 1, 0, 0, 0},
+			},
+			want: "bad",
+		},
 		{
 			name: "bad signal",
 			args: args{