Day 7 part 2 bruteforced
This commit is contained in:
parent
b9a249df6b
commit
e88a868165
|
@ -1,6 +1,9 @@
|
|||
import std/[strutils, sequtils, tables, strformat]
|
||||
import ./common
|
||||
|
||||
proc f(n: int): int = toSeq(0..abs(n)).foldl(a + b, 0)
|
||||
|
||||
|
||||
proc crabsDistance(input: string): int =
|
||||
result = int.high()
|
||||
var max_try = 0
|
||||
|
@ -11,10 +14,22 @@ proc crabsDistance(input: string): int =
|
|||
let fuel = dists.foldl(a + abs(b - t), 0)
|
||||
if fuel < result: result = fuel
|
||||
|
||||
proc crabsBigDistance(input: string): int =
|
||||
result = int.high()
|
||||
var max_try = 0
|
||||
let dists = input.split(',').map(parseInt)
|
||||
for d in dists:
|
||||
if d > max_try: max_try = d
|
||||
for t in 0..max_try:
|
||||
let fuel = dists.foldl(a + f(b - t), 0)
|
||||
if fuel < result: result = fuel
|
||||
|
||||
let input = 7.loadInputText()
|
||||
time("day 7 part 1"): echo input.crabsDistance()
|
||||
time("day 7 part 2"): echo input.crabsBigDistance()
|
||||
# time("day 7 part 2"): echo "?"
|
||||
|
||||
when not defined(release):
|
||||
let testInput = "16,1,2,0,4,2,7,1,2,14"
|
||||
doAssert testInput.crabsDistance() == 37
|
||||
doAssert testInput.crabsBigDistance() == 168
|
||||
|
|
Loading…
Reference in a new issue