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2021/02/part-002.py

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+#!/usr/bin/env python3
+
+
+# start position
+forward = 0
+depth = 0
+aim = 0
+
+with open('input.txt', 'r') as myfile:
+    for line in myfile:
+        # read file line by line
+        command, value = line.split(' ')
+        # print('command {} value {}'.format(command, value))
+        if command == 'forward':
+            forward = forward + int(value)            
+            if aim != 0:
+                depth = depth + (aim*int(value))
+                
+            print('forward {} ... aim is {}'.format(int(value), aim))
+                
+        elif command == 'down':
+            # depth = depth - int(value)
+            aim = aim + int(value)
+            
+        elif command == 'up':
+            # depth = depth + int(value)
+            aim = aim - int(value)
+
+
+print('forward: {} depth: {}'.format(forward, depth))
+print('Submit value: {}'.format(forward * abs(depth)))       
+
+    
+