diff --git a/app/main.py b/app/main.py
index fa56336e1..d074a5b3a 100644
--- a/app/main.py
+++ b/app/main.py
@@ -1 +1,12 @@
-# write your code here
+def calculate_team_total_rating(players: list) -> int:
+    return sum(player.get_rating() for player in players)
+
+
+def elves_concert(elfs: list) -> None:
+    for elf in elfs:
+        elf.play_elf_song()
+
+
+def feast_of_the_dwarves(dwarves: list) -> None:
+    for dwarf in dwarves:
+        dwarf.eat_favourite_dish()
diff --git a/app/players/__init__.py b/app/players/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/app/players/dwarves/__init__.py b/app/players/dwarves/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/app/players/dwarves/dwarf.py b/app/players/dwarves/dwarf.py
new file mode 100644
index 000000000..6b953b931
--- /dev/null
+++ b/app/players/dwarves/dwarf.py
@@ -0,0 +1,12 @@
+from abc import ABC
+
+from app.players.player import Player
+
+
+class Dwarf(Player, ABC):
+    def __init__(self, nickname: str, favourite_dish: str) -> None:
+        super().__init__(nickname)
+        self._favourite_dish = favourite_dish
+
+    def eat_favourite_dish(self) -> None:
+        print(f"{self.nickname} is eating {self._favourite_dish}")
diff --git a/app/players/dwarves/dwarf_blacksmith.py b/app/players/dwarves/dwarf_blacksmith.py
new file mode 100644
index 000000000..839db3f55
--- /dev/null
+++ b/app/players/dwarves/dwarf_blacksmith.py
@@ -0,0 +1,19 @@
+from .dwarf import Dwarf
+
+
+class DwarfBlacksmith(Dwarf):
+    def __init__(
+            self,
+            nickname: str,
+            favourite_dish: str,
+            skill_level: int
+    ) -> None:
+        super().__init__(nickname, favourite_dish)
+        self._skill_level = skill_level
+
+    def player_info(self) -> str:
+        return (f"Dwarf blacksmith {self.nickname} "
+                f"with skill of the {self._skill_level} level")
+
+    def get_rating(self) -> int:
+        return self._skill_level
diff --git a/app/players/dwarves/dwarf_warrior.py b/app/players/dwarves/dwarf_warrior.py
new file mode 100644
index 000000000..5fc7e5129
--- /dev/null
+++ b/app/players/dwarves/dwarf_warrior.py
@@ -0,0 +1,20 @@
+from .dwarf import Dwarf
+
+
+class DwarfWarrior(Dwarf):
+    def __init__(
+            self,
+            nickname: str,
+            favourite_dish: str,
+            hummer_level: int
+    ) -> None:
+        super().__init__(nickname, favourite_dish)
+        self._hummer_level = hummer_level
+
+    def player_info(self) -> str:
+        return (f"Dwarf warrior {self.nickname}. "
+                f"{self.nickname} has a hummer "
+                f"of the {self._hummer_level} level")
+
+    def get_rating(self) -> int:
+        return self._hummer_level + 4
diff --git a/app/players/elves/__init__.py b/app/players/elves/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/app/players/elves/druid.py b/app/players/elves/druid.py
new file mode 100644
index 000000000..dc4117055
--- /dev/null
+++ b/app/players/elves/druid.py
@@ -0,0 +1,19 @@
+from .elf import Elf
+
+
+class Druid(Elf):
+    def __init__(
+            self,
+            nickname: str,
+            musical_instrument: str,
+            favourite_spell: str
+    ) -> None:
+        super().__init__(nickname, musical_instrument)
+        self._favourite_spell = favourite_spell
+
+    def player_info(self) -> str:
+        return (f"Druid {self.nickname}. {self.nickname} has "
+                f"a favourite spell: {self._favourite_spell}")
+
+    def get_rating(self) -> int:
+        return len(self._favourite_spell)
diff --git a/app/players/elves/elf.py b/app/players/elves/elf.py
new file mode 100644
index 000000000..419f03bed
--- /dev/null
+++ b/app/players/elves/elf.py
@@ -0,0 +1,13 @@
+from abc import ABC
+
+from app.players.player import Player
+
+
+class Elf(Player, ABC):
+    def __init__(self, nickname: str, musical_instrument: str) -> None:
+        super().__init__(nickname)
+        self._musical_instrument = musical_instrument
+
+    def play_elf_song(self) -> None:
+        print(f"{self.nickname} is playing a song "
+              f"on the {self._musical_instrument}")
diff --git a/app/players/elves/elf_ranger.py b/app/players/elves/elf_ranger.py
new file mode 100644
index 000000000..f4a4fcca3
--- /dev/null
+++ b/app/players/elves/elf_ranger.py
@@ -0,0 +1,19 @@
+from app.players.elves.elf import Elf
+
+
+class ElfRanger(Elf):
+    def __init__(
+            self,
+            nickname: str,
+            musical_instrument: str,
+            bow_level: int
+    ) -> None:
+        super().__init__(nickname, musical_instrument)
+        self._bow_level = bow_level
+
+    def player_info(self) -> str:
+        return (f"Elf ranger {self.nickname}. "
+                f"{self.nickname} has bow of the {self._bow_level} level")
+
+    def get_rating(self) -> int:
+        return 3 * self._bow_level
diff --git a/app/players/player.py b/app/players/player.py
new file mode 100644
index 000000000..deb4232ae
--- /dev/null
+++ b/app/players/player.py
@@ -0,0 +1,14 @@
+from abc import ABC, abstractmethod
+
+
+class Player(ABC):
+    def __init__(self, nickname: str) -> None:
+        self.nickname = nickname
+
+    @abstractmethod
+    def get_rating(self) -> int:
+        pass
+
+    @abstractmethod
+    def player_info(self) -> str:
+        pass