Some reorg so I can have the original inputs

Day1/Day1.cs

@@ -0,0 +1,47 @@
+using System;
+using System.IO;
+
+namespace Advent
+{
+    public static class Day1
+    {
+        public static void Execute()
+        {
+            var lines = File.ReadAllLines(@".\Day1\input.txt");
+
+            var total = 0.0;
+
+            foreach (var line in lines)
+            {
+                var mass = double.Parse(line);
+
+                var fuel = CalculateFuel(mass);
+
+                total += fuel;
+            }
+
+            Console.WriteLine(total);
+        }
+
+        private static double CalculateFuel(double mass)
+        {
+            var totalFuel = 0.0;
+
+            var fuel = Math.Floor(mass / 3) - 2;
+
+            totalFuel += fuel;
+
+            while (fuel > 2)
+            {
+                fuel = Math.Floor(fuel / 3) - 2;
+
+                if (fuel < 0)
+                    fuel = 0;
+
+                totalFuel += fuel;
+            }
+
+            return totalFuel;
+        }
+    }
+}

Day1/input.txt

@@ -0,0 +1,100 @@
+120588
+137636
+114877
+118328
+97394
+58497
+139343
+80307
+125063
+70956
+119676
+76115
+91916
+64618
+82881
+57000
+141785
+73460
+68992
+125701
+97839
+137800
+111051
+104591
+114396
+60210
+80238
+112009
+70265
+140582
+58765
+96848
+130438
+55615
+53903
+109361
+129512
+75888
+93231
+54697
+125320
+53614
+87173
+71762
+147739
+131840
+123979
+54434
+121517
+113518
+83544
+124924
+76608
+130483
+149285
+134147
+111589
+88174
+136392
+94448
+139244
+54064
+85110
+102985
+95646
+54649
+129755
+135795
+119653
+147633
+108386
+143180
+126587
+119273
+130579
+56006
+83232
+99948
+147711
+83092
+99706
+98697
+143231
+94526
+53102
+86002
+71413
+111054
+147220
+136504
+59308
+61123
+148771
+113986
+55483
+94426
+62791
+100959
+63604
+112511