diff --git a/romanovpv/task 1/bst.py b/romanovpv/task 1/bst.py
new file mode 100644
index 0000000..fe639dc
--- /dev/null
+++ b/romanovpv/task 1/bst.py	
@@ -0,0 +1,15 @@
+def bst_insert(root, name, phone):
+    {'name': name, 'phone': phone, 'left': None, 'right': None}
+    pass
+
+def bst_find(root, name):
+    pass
+
+def bst_delete(root, name):
+    pass
+
+def bst_delete(root, name):
+    pass
+
+def bst_list_all(root):
+    pass
\ No newline at end of file
diff --git a/romanovpv/task 1/hash_table.py b/romanovpv/task 1/hash_table.py
new file mode 100644
index 0000000..3618220
--- /dev/null
+++ b/romanovpv/task 1/hash_table.py	
@@ -0,0 +1,24 @@
+import linked_list as ll
+
+def ht_create(size = 100):
+    return[None] * size
+
+def _hash(name, size):
+    return hash(name) % size
+
+def ht_insert(buckets, name, phone):
+    index = _hash(name, len(buckets))
+    buckets[index] = ll.ll_insert(buckets[index], name, phone)
+    return buckets
+
+def ht_find(buckets, name):
+    index = hash(name, len(buckets))
+    return ll.ll_find(buckets[index], name)
+    
+def ht_delete(buckets, name):
+    index = _hash(name, len(buckets))
+    buckets[index] = ll.ll_delete(buckets[index], name)
+    return buckets
+
+def ht_list_all(buckets):
+    pass
\ No newline at end of file
diff --git a/romanovpv/task 1/linked_list.py b/romanovpv/task 1/linked_list.py
new file mode 100644
index 0000000..1bb6143
--- /dev/null
+++ b/romanovpv/task 1/linked_list.py	
@@ -0,0 +1,12 @@
+def ll_insert(head, name, phone):
+    {'name': name, 'phone': phone}
+    pass
+
+def ll_find(head, name):
+    pass
+
+def ll_delete(head, name):
+    pass
+
+def ll_list_all(head):
+    pass
\ No newline at end of file
diff --git a/romanovpv/task 1/main.py b/romanovpv/task 1/main.py
new file mode 100644
index 0000000..fd60290
--- /dev/null
+++ b/romanovpv/task 1/main.py	
@@ -0,0 +1,4 @@
+import time
+import linked_list as ll
+import hash_table as ht
+import bst
\ No newline at end of file