diff --git a/heap/heap.go b/heap/heap.go
index f01ab07..b6564cd 100644
--- a/heap/heap.go
+++ b/heap/heap.go
@@ -1,7 +1,7 @@
 package heap
 
 import (
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 )
 
 type Heap struct {
diff --git a/priority_list/priority_list.go b/priority_list/priority_list.go
index 70b5a5b..bb5897b 100644
--- a/priority_list/priority_list.go
+++ b/priority_list/priority_list.go
@@ -3,7 +3,7 @@ package plist
 import (
 	"strings"
 
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/davecgh/go-spew/spew"
 )
 
diff --git a/priority_list/priority_list_test.go b/priority_list/priority_list_test.go
index 6d5eb51..a44ee97 100644
--- a/priority_list/priority_list_test.go
+++ b/priority_list/priority_list_test.go
@@ -7,7 +7,7 @@ import (
 	"log"
 	"testing"
 
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 )
 
 func loadTestData() []int {
diff --git a/priority_queue/iterator.go b/priority_queue/iterator.go
index bee120c..a443d4b 100644
--- a/priority_queue/iterator.go
+++ b/priority_queue/iterator.go
@@ -1,7 +1,7 @@
 package pqueue
 
 import (
-	"474420502.top/eson/structure/lastack"
+	"github.com/474420502/focus/lastack"
 )
 
 type Iterator struct {
diff --git a/priority_queue/priority_queue.go b/priority_queue/priority_queue.go
index 18bfd14..400b7d8 100644
--- a/priority_queue/priority_queue.go
+++ b/priority_queue/priority_queue.go
@@ -1,6 +1,6 @@
 package pqueue
 
-import "474420502.top/eson/structure/compare"
+import "github.com/474420502/focus/compare"
 
 type PriorityQueue struct {
 	queue *vbTree
diff --git a/priority_queue/priority_queue_test.go b/priority_queue/priority_queue_test.go
index 6957a4f..83638c0 100644
--- a/priority_queue/priority_queue_test.go
+++ b/priority_queue/priority_queue_test.go
@@ -5,7 +5,7 @@ import (
 
 	"github.com/davecgh/go-spew/spew"
 
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 )
 
 func TestQueuePush(t *testing.T) {
diff --git a/priority_queue/vbt.go b/priority_queue/vbt.go
index 75dcceb..13ace44 100644
--- a/priority_queue/vbt.go
+++ b/priority_queue/vbt.go
@@ -1,7 +1,7 @@
 package pqueue
 
 import (
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/davecgh/go-spew/spew"
 )
 
diff --git a/priority_queue/vbt_test.go b/priority_queue/vbt_test.go
index f366461..89f41d0 100644
--- a/priority_queue/vbt_test.go
+++ b/priority_queue/vbt_test.go
@@ -7,7 +7,7 @@ import (
 	"log"
 	"testing"
 
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/huandu/skiplist"
 
 	"github.com/Pallinder/go-randomdata"
diff --git a/priority_queuekey/iterator.go b/priority_queuekey/iterator.go
index b33b4b5..bf8952a 100644
--- a/priority_queuekey/iterator.go
+++ b/priority_queuekey/iterator.go
@@ -1,7 +1,7 @@
 package pqueuekey
 
 import (
-	"474420502.top/eson/structure/lastack"
+	"github.com/474420502/focus/lastack"
 )
 
 type Iterator struct {
diff --git a/priority_queuekey/priority_queuekey.go b/priority_queuekey/priority_queuekey.go
index bed775d..0954043 100644
--- a/priority_queuekey/priority_queuekey.go
+++ b/priority_queuekey/priority_queuekey.go
@@ -1,6 +1,6 @@
 package pqueuekey
 
-import "474420502.top/eson/structure/compare"
+import "github.com/474420502/focus/compare"
 
 type PriorityQueue struct {
 	queue *vbTree
diff --git a/priority_queuekey/priority_queuekey_test.go b/priority_queuekey/priority_queuekey_test.go
index 58755d3..703b72f 100644
--- a/priority_queuekey/priority_queuekey_test.go
+++ b/priority_queuekey/priority_queuekey_test.go
@@ -5,7 +5,7 @@ import (
 
 	"github.com/davecgh/go-spew/spew"
 
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 )
 
 func TestQueuePush(t *testing.T) {
diff --git a/priority_queuekey/vbt.go b/priority_queuekey/vbt.go
index c627b05..d2a0bdc 100644
--- a/priority_queuekey/vbt.go
+++ b/priority_queuekey/vbt.go
@@ -1,7 +1,7 @@
 package pqueuekey
 
 import (
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/davecgh/go-spew/spew"
 )
 
diff --git a/priority_queuekey/vbt_test.go b/priority_queuekey/vbt_test.go
index be10d94..ffc574d 100644
--- a/priority_queuekey/vbt_test.go
+++ b/priority_queuekey/vbt_test.go
@@ -7,7 +7,7 @@ import (
 	"log"
 	"testing"
 
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/huandu/skiplist"
 
 	"github.com/Pallinder/go-randomdata"
diff --git a/set/treeset/treeset.go b/set/treeset/treeset.go
index 7e48b08..5149753 100644
--- a/set/treeset/treeset.go
+++ b/set/treeset/treeset.go
@@ -4,8 +4,8 @@ import (
 	"fmt"
 	"strings"
 
-	"474420502.top/eson/structure/avldup"
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/avldup"
+	"github.com/474420502/focus/compare"
 )
 
 // TreeSet
diff --git a/tree/avl/avl.go b/tree/avl/avl.go
index e60050d..4fe37bd 100644
--- a/tree/avl/avl.go
+++ b/tree/avl/avl.go
@@ -1,7 +1,7 @@
 package avl
 
 import (
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/davecgh/go-spew/spew"
 )
 
diff --git a/tree/avl/avl_test.go b/tree/avl/avl_test.go
index 5d28088..37e2539 100644
--- a/tree/avl/avl_test.go
+++ b/tree/avl/avl_test.go
@@ -7,7 +7,7 @@ import (
 	"log"
 	"testing"
 
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/Pallinder/go-randomdata"
 	"github.com/davecgh/go-spew/spew"
 	"github.com/emirpasic/gods/trees/avltree"
diff --git a/tree/avl/iterator.go b/tree/avl/iterator.go
index 501ae6b..5fdc877 100644
--- a/tree/avl/iterator.go
+++ b/tree/avl/iterator.go
@@ -1,7 +1,7 @@
 package avl
 
 import (
-	"474420502.top/eson/structure/lastack"
+	"github.com/474420502/focus/lastack"
 )
 
 type Iterator struct {
diff --git a/tree/avldup/avldup.go b/tree/avldup/avldup.go
index 4cd7855..8347241 100644
--- a/tree/avldup/avldup.go
+++ b/tree/avldup/avldup.go
@@ -1,7 +1,7 @@
 package avldup
 
 import (
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/davecgh/go-spew/spew"
 )
 
diff --git a/tree/avldup/avldup_test.go b/tree/avldup/avldup_test.go
index f37ee66..ab6ea01 100644
--- a/tree/avldup/avldup_test.go
+++ b/tree/avldup/avldup_test.go
@@ -7,7 +7,7 @@ import (
 	"log"
 	"testing"
 
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/Pallinder/go-randomdata"
 	"github.com/davecgh/go-spew/spew"
 	"github.com/emirpasic/gods/trees/avltree"
diff --git a/tree/avldup/iterator.go b/tree/avldup/iterator.go
index 3fe6b63..cd86da2 100644
--- a/tree/avldup/iterator.go
+++ b/tree/avldup/iterator.go
@@ -1,7 +1,7 @@
 package avldup
 
 import (
-	"474420502.top/eson/structure/lastack"
+	"github.com/474420502/focus/lastack"
 )
 
 type Iterator struct {
diff --git a/tree/avlkey/avlkey.go b/tree/avlkey/avlkey.go
index 6efbf4f..c4dd2f4 100644
--- a/tree/avlkey/avlkey.go
+++ b/tree/avlkey/avlkey.go
@@ -1,7 +1,7 @@
 package avlkey
 
 import (
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/davecgh/go-spew/spew"
 )
 
diff --git a/tree/avlkey/avlkey_test.go b/tree/avlkey/avlkey_test.go
index c497e0b..c1e13dd 100644
--- a/tree/avlkey/avlkey_test.go
+++ b/tree/avlkey/avlkey_test.go
@@ -7,7 +7,7 @@ import (
 	"log"
 	"testing"
 
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/Pallinder/go-randomdata"
 	"github.com/davecgh/go-spew/spew"
 	"github.com/emirpasic/gods/trees/avltree"
diff --git a/tree/avlkey/iterator.go b/tree/avlkey/iterator.go
index 555efa8..fbe3ca4 100644
--- a/tree/avlkey/iterator.go
+++ b/tree/avlkey/iterator.go
@@ -1,7 +1,7 @@
 package avlkey
 
 import (
-	"474420502.top/eson/structure/lastack"
+	"github.com/474420502/focus/lastack"
 )
 
 type Iterator struct {
diff --git a/tree/avlkeydup/avlkeydup.go b/tree/avlkeydup/avlkeydup.go
index a354745..d7bd156 100644
--- a/tree/avlkeydup/avlkeydup.go
+++ b/tree/avlkeydup/avlkeydup.go
@@ -1,7 +1,7 @@
 package avlkeydup
 
 import (
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/davecgh/go-spew/spew"
 )
 
diff --git a/tree/avlkeydup/avlkeydup_test.go b/tree/avlkeydup/avlkeydup_test.go
index 41ed0e2..ec44a32 100644
--- a/tree/avlkeydup/avlkeydup_test.go
+++ b/tree/avlkeydup/avlkeydup_test.go
@@ -7,7 +7,7 @@ import (
 	"log"
 	"testing"
 
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/Pallinder/go-randomdata"
 	"github.com/davecgh/go-spew/spew"
 	"github.com/emirpasic/gods/trees/avltree"
diff --git a/tree/avlkeydup/iterator.go b/tree/avlkeydup/iterator.go
index ffa1a24..9c8c815 100644
--- a/tree/avlkeydup/iterator.go
+++ b/tree/avlkeydup/iterator.go
@@ -1,7 +1,7 @@
 package avlkeydup
 
 import (
-	"474420502.top/eson/structure/lastack"
+	"github.com/474420502/focus/lastack"
 )
 
 type Iterator struct {
diff --git a/tree/vbt/iterator.go b/tree/vbt/iterator.go
index eec37bf..8e3d6a6 100644
--- a/tree/vbt/iterator.go
+++ b/tree/vbt/iterator.go
@@ -1,7 +1,7 @@
 package vbt
 
 import (
-	"474420502.top/eson/structure/lastack"
+	"github.com/474420502/focus/lastack"
 )
 
 type Iterator struct {
diff --git a/tree/vbt/vbt.go b/tree/vbt/vbt.go
index 207f136..a703bd7 100644
--- a/tree/vbt/vbt.go
+++ b/tree/vbt/vbt.go
@@ -1,7 +1,7 @@
 package vbt
 
 import (
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/davecgh/go-spew/spew"
 )
 
diff --git a/tree/vbt/vbt_test.go b/tree/vbt/vbt_test.go
index 751a8ad..8e167d1 100644
--- a/tree/vbt/vbt_test.go
+++ b/tree/vbt/vbt_test.go
@@ -7,7 +7,7 @@ import (
 	"log"
 	"testing"
 
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/huandu/skiplist"
 
 	"github.com/Pallinder/go-randomdata"
diff --git a/tree/vbtkey/iterator.go b/tree/vbtkey/iterator.go
index 4f41655..6a96906 100644
--- a/tree/vbtkey/iterator.go
+++ b/tree/vbtkey/iterator.go
@@ -1,7 +1,7 @@
 package vbtkey
 
 import (
-	"474420502.top/eson/structure/lastack"
+	"github.com/474420502/focus/lastack"
 )
 
 type Iterator struct {
diff --git a/tree/vbtkey/vbtkey.go b/tree/vbtkey/vbtkey.go
index fb48e2b..580b73e 100644
--- a/tree/vbtkey/vbtkey.go
+++ b/tree/vbtkey/vbtkey.go
@@ -1,7 +1,7 @@
 package vbtkey
 
 import (
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/davecgh/go-spew/spew"
 )
 
diff --git a/tree/vbtkey/vbtkey_test.go b/tree/vbtkey/vbtkey_test.go
index fda305e..bcfb967 100644
--- a/tree/vbtkey/vbtkey_test.go
+++ b/tree/vbtkey/vbtkey_test.go
@@ -7,7 +7,7 @@ import (
 	"log"
 	"testing"
 
-	"474420502.top/eson/structure/compare"
+	"github.com/474420502/focus/compare"
 	"github.com/huandu/skiplist"
 
 	"github.com/Pallinder/go-randomdata"