--- a/src/parallel_execution/dependency.c	Thu Aug 25 03:23:29 2016 +0900
+++ b/src/parallel_execution/dependency.c	Tue Sep 13 11:54:25 2016 +0900
@@ -15,7 +15,10 @@
 }
 
 __code waitFor_stub(struct Context* context) {
-    // think
+    goto waitFor(context,
+            &context->data[context->dataNum-1]->task,
+            &context->data[Element]->element,
+            &context->data[Node]->node.value);
 }
 
 __code meta_spawnTask(struct Context* context, struct Queue* queue, enum Code next) {
@@ -80,6 +83,7 @@
 
 __code add(struct Context* context, struct Integer* input1, struct Integer* input2, struct Integer* output) {
     output->value = input1->value + input2->value;
+    printf("%d + %d = %d\n", input1->value, input2->value, output->value);
     goto meta(context, context->next);
 }
 
@@ -92,6 +96,7 @@
 
 __code mult(struct Context* context, struct Integer* input1, struct Integer* input2, struct Integer* output) {
     output->value = input1->value * input2->value;
+    printf("%d * %d = %d\n", input1->value, input2->value, output->value);
     goto meta(context, context->next);
 }