diff --git a/VaravinVV/task1_1.py b/VaravinVV/task1_1.py
index 397b757..df259ec 100644
--- a/VaravinVV/task1_1.py
+++ b/VaravinVV/task1_1.py
@@ -1,2 +1,61 @@
-def ll_insert(name, phone, head):
-    data = {'name' : name, 'phone' : phone, "next" : head}
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+import random
+N = []
+
+for n in range(10000):
+    i = random.randint(1,99999)
+    p = random.randint(10000000, 99999999)
+    N.append((f"User_{i:05d}", str(p)))
+
+def ll_insert(head, name, phone):
+    data = {'name' : name, 'phone' : phone, "next" : None}
+
+    if head is None:
+        return data
+    
+    current = head
+    while current:
+        if current['name'] == name:
+            current['phone'] = phone
+            return head
+        if current['next'] == None:
+            last = current
+        current = current['next']
+    
+    last['next'] = data
+    return head
+
+
+def ll_find(head, name):
+    current = head
+    while current:
+        if current['name'] == name:
+            return current['phone']
+        current = current['next']
+    return None
+
+def ll_delete(head, name):
+    if head is None:
+        return None
+    
+    prev = head
+    current = head['next']
+    while current:
+        if current['name'] == name:
+            prev['next'] = current['next']
+            return head
+        prev = current
+        current = current['next']
+    return head
+
+def ll_list_all(head):
+    return None
+
+test_data = None
+for name, phone in N:
+    test_data = ll_insert(test_data, name, phone)
+
+test_data = ll_insert(test_data, 'User_02000', '99999999')
+test_data = ll_insert(test_data, 'User_01000', '99999998')
+print(ll_find(test_data, 'User_02000'))
+ll_delete(test_data, 'User_02000')
+print(ll_find(test_data, 'User_02000'))
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