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Tighter bounds for the range of y

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Bert Peters
2021-12-18 15:01:47 +01:00
parent ba1b7b693e
commit 9c299f140c
1 changed files with 12 additions and 2 deletions
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14
2021/src/day17.rs
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@@ -121,7 +121,14 @@ pub fn part1(input: &mut dyn Read) -> String {
} }
}; };
(0..1000).filter_map(check_value).max().unwrap().to_string() debug_assert!(*y_range.start() < 0);
let y_max = -*y_range.start();
(0..y_max)
.filter_map(check_value)
.max()
.unwrap()
.to_string()
} }
pub fn part2(input: &mut dyn Read) -> String { pub fn part2(input: &mut dyn Read) -> String {
@@ -141,7 +148,10 @@ pub fn part2(input: &mut dyn Read) -> String {
}) })
}; };
(-1000..1000) debug_assert!(*y_range.start() < 0);
let y_max = -*y_range.start();
(-y_max..y_max)
.filter_map(num_options) .filter_map(num_options)
.sum::<i32>() .sum::<i32>()
.to_string() .to_string()