Advent of Code 2018: Day 1
data = input.split('\n').map(delta => Number(delta))
Part 1
Starting with a frequency of zero, what is the resulting frequency after all of the changes in frequency have been applied?
data.reduce((acc, delta) => acc + delta, 0)
Part 2
What is the length of the shortest polymer you can produce by removing all units of exactly one type and fully reacting the result?
{ let currentFrequency = 0; let seenFrequencies = new Set([0]); while (true) { for (const delta of data) { currentFrequency += delta; if (seenFrequencies.has(currentFrequency)) { return currentFrequency; } else { seenFrequencies.add(currentFrequency); } } } }
input = `-2 -3 +4 -15 -15 +18 -7 +11 -16 -14 +2 -6 +16 +6 +14 -15 +12 -5 +17 -10 -20 -19 -14 -10 +4 -11 +10 -1 +12 -17 -2 +1 -17 +9 +4 +19 +11 -17 +15 -12 +5 +4 -1 -10 -19 -16 -9 +18 +2 +4 -19 +16 +6 -16 -14 +7 -9 +7 +17 +17 -14 +6 -22 -13 -2 -1 -18 -3 +19 +19 +16 -22 +14 -2 -3 +2 -18 -15 -14 -4 -15 +1 -3 -8 +18 -11 +6 -7 +17 +7 -8 -13 -4 +7 -15 -11 +7 +9 -7 +1 -20 -19 -18 -17 -12 +7 -16 -11 -4 -8 -4 -3 -2 +3 -15 +18 +5 +14 +15 +2 -19 +5 -13 +19 +9 +8 +5 -1 -19 +11 +2 +13 -17 +9 -16 +14 +20 +12 +8 +10 +17 -15 -8 +15 +19 -14 -3 -10 +2 +4 -1 +14 -12 +15 -2 -11 -14 -18 +6 -12 +7 +18 +15 +6 +12 +3 -6 +17 +11 +14 +13 +3 +6 -11 -19 -5 +14 -10 -7 +18 -8 -13 -2 +19 -18 -17 +11 +14 +17 +1 +26 +6 +15 +21 -5 +12 +6 +4 +10 -8 +16 -14 +4 -1 +17 -15 -23 +15 +18 +19 +10 -18 -2 +15 +15 +13 +5 +10 -8 +2 -18 +13 +15 +8 -19 +2 -4 -3 +20 -3 +12 +6 +13 +13 -15 +6 -15 +3 +7 -19 +11 +17 +15 -4 -10 -14 -20 +18 -11 -17 +8 +12 +3 -11 +7 -13 -4 +19 -7 -17 +12 +9 +13 +7 -13 +24 -2 +14 -5 +10 -6 -1 -8 -5 -6 +5 +12 +16 +5 -14 +19 +18 -9 -6 -12 -2 +19 -12 -9 +5 -4 -9 -9 +16 -19 -14 -7 -24 -20 +16 +12 +19 +20 -15 +26 +21 -2 +12 +4 -2 +18 -17 -12 -20 +2 +9 +14 +16 +12 -9 +14 +17 -19 +11 +3 -13 -3 +11 -14 +18 +9 -16 -2 +19 +7 -10 -3 +4 +10 +15 +19 -2 -5 +2 +2 -11 +6 -17 -11 +6 -10 +16 +7 -1 -2 +19 +6 +16 -12 +14 -5 +19 -12 +1 -6 -6 -2 +7 +19 +17 -4 +3 +3 +17 +16 -2 -10 -1 -14 -2 -17 -11 +3 -21 +15 +11 +7 -3 -18 +1 -15 -11 +1 -18 +11 +15 -17 -16 -19 +9 -5 +16 -18 +13 +16 -17 -1 -3 -2 +20 +14 -13 -17 +13 +5 +2 +19 +22 -3 -22 +10 -13 +2 -29 -27 -16 +17 -27 +18 -13 -4 +6 -5 +12 -16 -9 +3 +1 +10 -25 -1 -19 +13 +12 +2 -6 -12 +3 +25 +28 -4 +2 +17 -9 +63 +23 -8 +9 -6 +15 -14 +12 +6 +18 -6 -15 +12 -16 -3 +15 +24 +19 -6 +4 -8 -19 +4 +4 -20 -1 +24 +10 -9 +13 +11 +2 +11 +14 -2 +18 -12 +1 -17 +6 +1 -16 +10 +4 +9 -6 +10 -14 -2 +22 +2 +6 +10 -19 -24 +10 +11 +14 +2 +5 +18 +29 +1 +20 +7 +3 -12 +25 -21 +24 +4 -18 +1 +51 +19 -17 -23 +31 -15 +27 +2 +19 -16 +1 +18 +9 +22 +6 +15 -19 +14 -7 +3 +14 -7 -15 +18 -8 -1 -14 -7 -16 +22 +22 -2 +18 +2 -15 -39 +5 +21 -5 -2 +4 +1 +9 -58 +6 -95 -85 -5 +1 +7 +9 +15 -117 -12 -14 -18 +70 +9 -17 +93 -37 -134 -90 +22 -19 -7 -59 +14 -13 -47 +213 +81022 +9 +5 +4 -3 -16 -2 +4 +2 +5 -12 -9 -13 +2 -18 -18 -14 +7 +18 -19 +13 -1 -6 +9 -1 -18 +15 -14 -4 +12 -1 +5 +16 -7 +12 +6 -16 +13 +10 +3 -11 -13 +6 -7 +16 +3 -6 +19 -15 +14 -1 +19 +19 +13 -9 -3 -10 -14 +15 -9 +19 -6 +10 -7 +11 -1 +3 +2 -3 +8 +3 +13 +6 +3 +2 +18 +9 -17 +13 +15 -13 +9 +2 +19 +14 -13 +8 +18 +6 -4 -18 +1 -19 -1 +10 -5 -11 -10 -16 -4 -5 +3 -13 -19 -18 +16 +16 -5 +16 -10 -8 +9 +14 +1 +9 -3 +19 -12 +11 +12 +5 +19 -9 +4 +15 +19 -4 -10 -12 -18 -16 +13 -4 -16 -14 -15 +18 +1 -8 -7 -18 +3 -21 +9 -7 +8 +18 +2 -11 +6 +10 +9 +11 -21 +19 +4 +2 +7 +10 -16 +13 +9 +9 +16 +9 +13 -11 +16 +10 +14 +13 -5 -10 -16 -2 -2 +6 +19 +1 -16 +14 -13 +3 -5 -4 +12 -5 +22 +11 -5 +13 +4 +13 +19 +18 -13 +15 +19 -12 -11 -19 -12 +5 -19 +18 -19 +5 -13 -10 +15 -8 -2 -2 -11 -6 +5 -4 +21 +18 -5 +18 -11 +19 +12 -5 +4 -16 -10 +11 -16 +13 +11 -1 +15 +4 +13 -15 +14 -7 +19 +10 -8 +19 +4 -7 +19 +8 +14 -7 +3 +13 +19 -9 +4 -17 -19 -11 -11 -4 -16 -21 -5 +1 +16 -11 -15 -18 -13 -7 -13 -21 -18 +10 +14 +13 -7 -1 -4 +17 +20 +12 -24 +3 -8 +3 +10 +11 +11 -16 +13 +12 +19 -2 +7 +6 +5 +3 +10 +15 +2 +11 +14 -9 -1 -19 -16 +9 +17 -13 +4 +6 +2 +13 +16 +19 +12 +1 +18 +17 +19 +5 -8 +6 +10 +16 -9 +13 -8 -9 +5 -12 -7 -16 +4 -12 +18 -19 -7 +2 +2 -19 +10 +19 +9 -6 -18 +4 +18 -11 -13 -11 -16 +3 -4 -11 -2 +10 -14 +16 +14 -1 +2 +1 +4 -9 +17 -5 -14 -15 -13 +16 -8 -11 +2 +19 +23 +15 -13 +20 +3 +7 +9 +17 +10 -11 -19 -19 +9 -17 +12 -20 -22 +16 -9 -18 -10 -9 -81046`