11 lines
269 B
Rust
11 lines
269 B
Rust
use std::io;
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fn main() {
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let mut buf = String::new();
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io::stdin().read_line(&mut buf).unwrap();
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let mut numbers: Vec<String> = buf.trim_end().split('+').map(|item| item.to_string()).collect();
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numbers.sort();
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println!("{}", numbers.join("+"));
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}
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