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+# Day One: The Tyranny of the Rocket Equation
+import os, strutils
+
+let input: string = paramStr(1)
+var sum, fuelsum: int = 0
+
+for mass in lines(input):
+  var fuel = parseInt(mass) div 3 - 2
+  sum += fuel
+  fuelsum += fuel
+  while fuel > 0:
+    fuel = fuel div 3 - 2
+    fuelsum += max(0, fuel)
+
+echo sum
+echo fuelsum