diff --git a/Introduction b/Introduction
index b030381..b260fe4 160000
--- a/Introduction
+++ b/Introduction
@@ -1 +1 @@
-Subproject commit b030381e7523577111883643486c2fb2c5e403c7
+Subproject commit b260fe439ec66c518db7a4203548b0c9da3c4a21
diff --git a/Lab1 b/Lab1
index 93127b4..7a92c86 160000
--- a/Lab1
+++ b/Lab1
@@ -1 +1 @@
-Subproject commit 93127b4977efa04f2ac707cf3e8836eaf2d49450
+Subproject commit 7a92c86b1d18224c0c3ba987e5aea626a44b998b
diff --git a/Lab2 b/Lab2
index 00f5ee6..28172cb 160000
--- a/Lab2
+++ b/Lab2
@@ -1 +1 @@
-Subproject commit 00f5ee6be939abb950abbd9852a084ca638ba2c4
+Subproject commit 28172cbd01b5a29d5b0c2cb06cd297987590da16
diff --git a/Lab3 b/Lab3
index 08e27ef..8129d26 160000
--- a/Lab3
+++ b/Lab3
@@ -1 +1 @@
-Subproject commit 08e27ef0d1a85f6e82bd0939bacefec897ec9073
+Subproject commit 8129d261267101df6af066d092e67827859c641f
diff --git a/Lab4 b/Lab4
index 64a56ec..3c08b04 160000
--- a/Lab4
+++ b/Lab4
@@ -1 +1 @@
-Subproject commit 64a56eca2af0ca37b98fdadf15e5ecb75d5484f0
+Subproject commit 3c08b04264bc168e057c827f60285ede4063c1cc