diff --git a/task1/task1.py b/task1/task1.py
new file mode 100644
index 0000000..9c6fb04
--- /dev/null
+++ b/task1/task1.py
@@ -0,0 +1,10 @@
+import sys 
+n = int(sys.argv[1])
+m = int(sys.argv[2])
+st = 1
+while True:
+    print(st, end='')
+    st = 1+(st+m-2)%n
+    if st == 1:
+        break
+print()
\ No newline at end of file
diff --git a/task3/report.json b/task3/report.json
new file mode 100644
index 0000000..6a5fca7
--- /dev/null
+++ b/task3/report.json
@@ -0,0 +1,84 @@
+{
+    "tests": [
+        {
+            "id": 2,
+            "title": "Smoke test",
+            "value": "passed"
+        },
+        {
+            "id": 41,
+            "title": "Debug test",
+            "value": "passed"
+        },
+        {
+            "id": 73,
+            "title": "Performance test",
+            "value": "passed",
+            "values": [
+                {
+                    "id": 345,
+                    "title": "Maxperf",
+                    "value": "passed",
+                    "values": [
+                        {
+                            "id": 230,
+                            "title": "Percent",
+                            "values": [
+                                {
+                                    "id": 234,
+                                    "title": "200",
+                                    "value": "passed"
+                                },
+                                {
+                                    "id": 653,
+                                    "title": "300",
+                                    "value": "passed"
+                                }
+                            ]
+                        }
+                    ]
+                },
+                {
+                    "id": 110,
+                    "title": "Stability test",
+                    "value": "failed",
+                    "values": [
+                        {
+                            "id": 261,
+                            "title": "Percent",
+                            "values": [
+                                {
+                                    "id": 238,
+                                    "title": "160",
+                                    "value": "passed"
+                                },
+                                {
+                                    "id": 690,
+                                    "title": "240",
+                                    "value": "failed"
+                                }
+                            ]
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "id": 122,
+            "title": "Security test",
+            "value": "failed",
+            "values": [
+                {
+                    "id": 5321,
+                    "title": "Confidentiality",
+                    "value": "passed"
+                },
+                {
+                    "id": 5322,
+                    "title": "Integrity",
+                    "value": "failed"
+                }
+            ]
+        }
+    ]
+}
\ No newline at end of file
diff --git a/task3/task3.py b/task3/task3.py
new file mode 100644
index 0000000..f4c9a11
--- /dev/null
+++ b/task3/task3.py
@@ -0,0 +1,26 @@
+import sys
+import json
+import shutil
+
+file1 = "task3/" + sys.argv[1]
+file2 = "task3/" + sys.argv[2]
+
+with open(file1, 'r') as file:
+    tests_data = json.load(file)
+
+with open(file2, 'r') as file:
+    values_data = json.load(file)
+
+def update_tests(tests, values):
+    for test in tests:
+        for value in values:
+            if value['id'] == test['id']:
+                test['value'] = value['value']
+        if 'values' in test:
+            update_tests(test['values'], values)
+
+update_tests(tests_data['tests'], values_data['values'])
+
+with open('report.json', 'w') as file:
+    json.dump(tests_data, file, indent=4)
+shutil.move('report.json', 'task3/report.json')
\ No newline at end of file
diff --git a/task3/tests.json b/task3/tests.json
new file mode 100644
index 0000000..65e3408
--- /dev/null
+++ b/task3/tests.json
@@ -0,0 +1,63 @@
+{
+  "tests": [{
+    "id": 2,
+    "title": "Smoke test",
+    "value": ""
+  }, {
+    "id": 41,
+    "title": "Debug test",
+    "value": ""
+  }, {
+    "id": 73,
+    "title": "Performance test",
+    "value": "",
+    "values": [{
+      "id": 345,
+      "title": "Maxperf",
+      "value": "",
+      "values": [ {
+        "id": 230,
+        "title": "Percent",
+        "values": [{
+          "id": 234,
+          "title": "200",
+          "value": ""
+        }, {
+          "id": 653,
+          "title": "300",
+          "value": ""
+        }]
+      }]
+    }, {
+      "id": 110,
+      "title": "Stability test",
+      "value": "",
+      "values": [ {
+        "id": 261,
+        "title": "Percent",
+        "values": [{
+          "id": 238,
+          "title": "160",
+          "value": ""
+        }, {
+          "id": 690,
+          "title": "240",
+          "value": ""
+        }]
+      }]
+    }]
+  }, {
+    "id": 122,
+    "title": "Security test",
+    "value": "",
+    "values": [{
+      "id": 5321,
+      "title": "Confidentiality",
+      "value": ""
+    }, {
+      "id": 5322,
+      "title": "Integrity",
+      "value": ""
+    }]
+  }]
+}
\ No newline at end of file
diff --git a/task3/values.json b/task3/values.json
new file mode 100644
index 0000000..c13a13d
--- /dev/null
+++ b/task3/values.json
@@ -0,0 +1,39 @@
+{
+  "values": [{
+    "id": 2,
+    "value": "passed"
+  }, {
+    "id": 41,
+    "value": "passed"
+  }, {
+    "id": 73,
+    "value": "passed"
+  }, {
+    "id": 110,
+    "value": "failed"
+  }, {
+    "id": 122,
+    "value": "failed"
+  }, {
+    "id": 234,
+    "value": "passed"
+  }, {
+    "id": 238,
+    "value": "passed"
+  }, {
+    "id": 345,
+    "value": "passed"
+  }, {
+    "id": 653,
+    "value": "passed"
+  }, {
+    "id": 690,
+    "value": "failed"
+  }, {
+    "id": 5321,
+    "value": "passed"
+  }, {
+    "id": 5322,
+    "value": "failed"
+  }]
+}
\ No newline at end of file
diff --git a/task4/file.txt b/task4/file.txt
new file mode 100644
index 0000000..b1ecef9
--- /dev/null
+++ b/task4/file.txt
@@ -0,0 +1,4 @@
+1
+10
+2
+9
\ No newline at end of file
diff --git a/task4/task4.py b/task4/task4.py
new file mode 100644
index 0000000..9822fc0
--- /dev/null
+++ b/task4/task4.py
@@ -0,0 +1,20 @@
+import sys 
+a = sys.argv[1]
+nums = []
+with open (a, "r") as b:
+    nums = [int(line) for line in b]
+sum = 0
+step = 0
+for num in nums:
+    sum+= num
+avg_num_r = round(sum/ len(nums))
+for num in nums:
+    while num != avg_num_r:
+        if num > avg_num_r:
+            num -= 1
+            step += 1
+        elif num < avg_num_r:
+            num += 1
+            step +=1
+print(step)
+                
\ No newline at end of file