13 lines
249 B
Rust
13 lines
249 B
Rust
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use std::io;
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fn main() {
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let mut s = String::new();
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io::stdin().read_line(&mut s).unwrap();
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let mut nums = s.trim().split('+').map(|d| String::from(d)).collect::<Vec<String>>();
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nums.sort();
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println!("{}", nums.join("+"));
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}
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