tvl-depot/advent-of-code/day_1.py
William Carroll 5c9079a410 Splice ./universe directory into ./
Manually merging:
- README.md: I added the description from universe/README.md into the heading of
  dotfiles/README.md.
- .envrc: dotfiles/.envrc was a superset of universe/.envrc
- .gitignore: Adding some of the ignored patterns from universe/.gitignore to
  dotfiles/.gitignore

Everything else here should be a simple rename.
2020-01-29 14:43:20 +00:00

119 lines
1.6 KiB
Python

from math import floor
xs = [
102473,
84495,
98490,
68860,
62204,
72810,
65185,
145951,
77892,
108861,
70764,
67286,
74002,
80773,
52442,
131505,
107162,
126993,
59784,
64231,
91564,
68585,
98735,
69020,
77332,
60445,
65826,
111506,
95431,
146687,
135119,
86804,
95915,
85434,
111303,
148127,
132921,
136213,
89004,
143137,
144853,
143017,
104386,
100612,
54760,
63813,
144191,
84481,
69718,
84936,
98621,
124993,
92736,
60369,
137284,
101902,
112726,
51784,
126496,
85005,
101661,
137278,
136637,
90340,
100209,
53683,
50222,
132060,
98797,
139054,
135638,
100632,
137849,
125333,
103981,
76954,
134352,
74229,
93402,
62552,
50286,
57066,
98439,
120708,
117827,
107884,
72837,
148663,
125645,
61460,
120555,
142473,
106668,
58612,
58576,
143366,
90058,
121087,
89546,
126161,
]
def fuel_for_mass(x):
"""Return the amount of fuel (in mass) required for a mass of X. The total
amount of fuel includes the amount of fuel required for the fuel itself,
since fuel also has a mass weights."""
mass_fuel = floor(x / 3) - 2
if mass_fuel < 0:
return 0
else:
fuel_fuel = fuel_for_mass(mass_fuel)
return mass_fuel + fuel_fuel
print(sum(fuel_for_mass(x) for x in xs))