23 lines
652 B
Rust
23 lines
652 B
Rust
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use std::collections::BinaryHeap;
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use std::io;
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fn main() -> io::Result<()> {
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let mut l1 = BinaryHeap::<u64>::new();
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let mut l2 = BinaryHeap::<u64>::new();
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for line in io::stdin().lines() {
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let line = line?;
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let parts: Vec<&str> = line.trim().split_whitespace().collect();
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let (n1, n2) = (parts[0], parts[1]);
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l1.push(n1.parse().unwrap());
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l2.push(n2.parse().unwrap());
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}
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let l1 = l1.into_sorted_vec();
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let l2 = l2.into_sorted_vec();
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let mut sum = 0;
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for (n1, n2) in l1.into_iter().zip(l2.into_iter()) {
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sum += n1.abs_diff(n2);
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}
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println!("{}", sum);
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Ok(())
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}
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