Module a
Expand description
ยงABC 394 A - 22222
refs: https://atcoder.jp/contests/abc394/tasks/abc394_a
use proconio::input;
fn main() {
input! { s: String }
println!("{}", s.chars().filter(|&c| c == '2').collect::<String>())
}
refs: https://atcoder.jp/contests/abc394/tasks/abc394_a
use proconio::input;
fn main() {
input! { s: String }
println!("{}", s.chars().filter(|&c| c == '2').collect::<String>())
}