diff --git a/3/3.py b/3/3.py
new file mode 100755
index 0000000..4d69060
--- /dev/null
+++ b/3/3.py
@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+# 2021 - Advent Of Code - 3
+
+import re
+
+line_count = 0
+count = [0 for x in range(12)]
+result = [0 for x in range(12)]
+
+re_parse = re.compile(r'(\d)'*12)
+
+with open('input.txt') as f:
+    for line in f:
+        m = re_parse.match(line)
+        line_count += 1
+
+        for i in range(12):
+            if m.group(i+1) == '1':
+                count[i] += 1
+
+for i in range(12):
+    if count[i] > line_count / 2:
+        result[i] = 1
+    else:
+        result[i] = 0
+
+
+print(count)
+invert_result = [0 if x == 1 else 1 for x in result]
+
+gamma_bin = "".join([str(x) for x in result])
+gamma = int(gamma_bin, 2)
+
+epsilon_bin = "".join([str(x) for x in invert_result])
+epsilon = int(epsilon_bin, 2)
+
+print(f'gamma_bin   {gamma_bin}, gamma: {gamma}')
+print(f'epsilon_bin {epsilon_bin}, epsilon: {epsilon}')
+
+print(f'power consumption: ({gamma}, {epsilon}) => {gamma * epsilon}')