https://atcoder.jp/contests/abc236/tasks/abc236_benumerateは、本当はindexと値の参照のタプルを返します。 // Who is missing? #![allow(non_snake_case)] fn read<T: std::str::FromStr>() -> T { let mut line = String::new(); std::io::stdin().read_line(&mut line).ok();</t:>…