diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..26d3352
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/.idea/inspectionProfiles/profiles_settings.xml b/.idea/inspectionProfiles/profiles_settings.xml
new file mode 100644
index 0000000..105ce2d
--- /dev/null
+++ b/.idea/inspectionProfiles/profiles_settings.xml
@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..d56657a
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9" project-jdk-type="Python SDK" />
+</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..439c888
--- /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/refactoring-task-at-20.iml" filepath="$PROJECT_DIR$/.idea/refactoring-task-at-20.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/refactoring-task-at-20.iml b/.idea/refactoring-task-at-20.iml
new file mode 100644
index 0000000..d0876a7
--- /dev/null
+++ b/.idea/refactoring-task-at-20.iml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <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/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/filter.py b/filter.py
index 4150df2..4f4547b 100644
--- a/filter.py
+++ b/filter.py
@@ -2,27 +2,33 @@
 import numpy as np
 img = Image.open("img2.jpg")
 arr = np.array(img)
+size = 10
+gradation = 50
 a = len(arr)
 a1 = len(arr[1])
+
+
+def findMidValue(i, j, size):
+    global arr
+    matrix = arr[i:i + size, j:j + size, ::]
+    b = list(matrix.reshape(1, matrix.shape[0] * matrix.shape[1] * 3))[0]
+    b = list(map(lambda x: int(x)/3, b))
+    s = int(sum(b)// size**2)
+    return s
+
+
+def changeColour(i, j, size, gradation):
+    global arr
+    s = findMidValue(i, j, size)
+    arr[i:i + size, j:j + size, ::] = s
+
+
 i = 0
-while i < a - 11:
+while i <= a - 1:
     j = 0
-    while j < a1 - 11:
-        s = 0
-        for n in range(i, i + 10):
-            for n1 in range(j, j + 10):
-                n1 = arr[n][n1][0]
-                n2 = arr[n][n1][1]
-                n3 = arr[n][n1][2]
-                M = n1 + n2 + n3
-                s += M
-        s = int(s // 100)
-        for n in range(i, i + 10):
-            for n1 in range(j, j + 10):
-                arr[n][n1][0] = int(s // 50) * 50
-                arr[n][n1][1] = int(s // 50) * 50
-                arr[n][n1][2] = int(s // 50) * 50
-        j = j + 10
-    i = i + 10
+    while j <= a1 - 1:
+        changeColour(i, j, size, gradation)
+        j = j + size
+    i = i + size
 res = Image.fromarray(arr)
 res.save('res.jpg')
diff --git a/res.jpg b/res.jpg
index d8d97ff..d2488a8 100644
Binary files a/res.jpg and b/res.jpg differ