28 lines
1.2 KiB
EmacsLisp
28 lines
1.2 KiB
EmacsLisp
;; Advent of Code 2019 - Day 1
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(require 'dash)
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;; Puzzle 1:
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(defvar day-1/input
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'(83285 96868 121640 51455 128067 128390 141809 52325 68310 140707 124520 149678
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87961 52040 133133 52203 117483 85643 84414 86558 65402 122692 88565 61895
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126271 128802 140363 109764 53600 114391 98973 124467 99574 69140 144856
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56809 149944 138738 128823 82776 77557 51994 74322 64716 114506 124074
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73096 97066 96731 149307 135626 121413 69575 98581 50570 60754 94843 72165
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146504 53290 63491 50936 79644 119081 70218 85849 133228 114550 131943
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67288 68499 80512 148872 99264 119723 68295 90348 146534 52661 99146 95993
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130363 78956 126736 82065 77227 129950 97946 132345 107137 79623 148477
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88928 118911 75277 97162 80664 149742 88983 74518))
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(defun calculate-fuel (mass)
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(- (/ mass 3) 2))
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(message "Solution to day1/1: %d" (apply #'+ (-map #'calculate-fuel day-1/input)))
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;; Puzzle 2:
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(defun calculate-recursive-fuel (mass)
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(let ((fuel (calculate-fuel mass)))
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(if (< fuel 0) 0
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(+ fuel (calculate-recursive-fuel fuel)))))
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(message "Solution to day1/2: %d" (apply #'+ (-map #'calculate-recursive-fuel day-1/input)))
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