diff --git a/README.md b/README.md
index c521fe5..5b97a76 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,10 @@
 [201505]: https://github.com/Stegallo/adventofcode/blob/master/y_2015/day5.py
 [201505p]: https://adventofcode.com/2015/day/5
 
+
+[201508]: https://github.com/Stegallo/adventofcode/blob/master/y_2015/day8.py
+[201508p]: https://adventofcode.com/2015/day/8
+
 ## to run the code
 
 activate the adventofcode virtual environment:
diff --git a/tests/y_2015/test_2015_day8.py b/tests/y_2015/test_2015_day8.py
new file mode 100644
index 0000000..18499df
--- /dev/null
+++ b/tests/y_2015/test_2015_day8.py
@@ -0,0 +1,18 @@
+from __future__ import annotations
+
+from unittest.mock import mock_open, patch
+
+from y_2015.day8 import Day
+
+with patch("builtins.open", mock_open(read_data="")):
+    day = Day()
+
+
+def test_calculate_1():
+    day._Day__input_data = ['""', '"abc"', '"aaa\\"aaa"', '"\\x27"']
+    assert day._calculate_1() == 12
+
+
+def test_calculate_2():
+    day._Day__input_data = ['""', '"abc"', '"aaa\\"aaa"', '"\\x27"']
+    assert day._calculate_2() == 19
diff --git a/y_2015/day8.py b/y_2015/day8.py
new file mode 100644
index 0000000..964ef3e
--- /dev/null
+++ b/y_2015/day8.py
@@ -0,0 +1,17 @@
+from common.aoc import AoCDay
+
+
+class Day(AoCDay):
+    def __init__(self, test=0):
+        super().__init__(__name__, test)
+
+    def _preprocess_input(self):
+        self.__input_data = self._input_data[0]
+
+    def _calculate_1(self):
+        string_len = sum(len(x) for x in self.__input_data)
+        mem_len = sum(len(eval(x)) for x in self.__input_data)
+        return string_len - mem_len
+
+    def _calculate_2(self):
+        return sum(2 + x.count("\\") + x.count('"') for x in self.__input_data)