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day17: don't revisit the start position

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Keenan Tims
2023-12-17 20:55:42 -08:00
parent 3ee26cefe5
commit e65c17c8e6
1 changed files with 1 additions and 0 deletions
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17/src/main.rs
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@@ -311,6 +311,7 @@ impl<'a> WalkCost2<'a> {
weight: cur_move.weight + self.map.map[new_pos.1][new_pos.0], weight: cur_move.weight + self.map.map[new_pos.1][new_pos.0],
}) })
}) })
.filter(|m| m.new_pos != self.start)
.filter(|m| *m.dir != cur_move.dir.opposite()) .filter(|m| *m.dir != cur_move.dir.opposite())
.filter(|m| { .filter(|m| {
if m.dir == cur_move.dir { if m.dir == cur_move.dir {