diff --git a/day01/day01.py b/day01/day01.py
new file mode 100644
index 0000000..863fa7e
--- /dev/null
+++ b/day01/day01.py
@@ -0,0 +1,45 @@
+import os
+
+def get_path():
+  return os.path.join(os.path.dirname(__file__), 'data.txt')
+
+# Get the sum of the largest group
+def solve_part1():
+  [idx, value] = [0, 0]
+  [max_idx, max_value] = [0, 0]
+
+  with open(get_path()) as fp:
+    for line in fp:
+      if line == '\n':
+        if value >= max_value:
+          [max_idx, max_value] = [idx, value]
+        [idx, value] = [idx+1, 0]
+      else:
+        value += int(line)
+
+  print('largest sum #%s: %s' % (max_idx, max_value))
+
+# Get the sum of the 3 largest groups
+def solve_part2():
+  largest = [0]
+  value = 0
+
+  with open(get_path()) as fp:
+    for line in fp:
+      if line == '\n':
+        largest.append(value)
+        largest.sort(reverse=True)
+        largest = largest[:3]
+        value = 0
+      else:
+        value += int(line)
+    
+  print('largest 3 sums: %s, %s, %s' % (largest[0], largest[1], largest[2]))
+  print('total sum: %s' % sum(largest))
+
+if __name__ == '__main__':
+  print('Part 1:')
+  solve_part1()
+
+  print('Part 2:')
+  solve_part2()
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