feat(stomp): start on rust cp template

ioi-template.rs

@@ -0,0 +1,31 @@
+// Template based on https://codeforces.com/blog/entry/67391
+#[allow(unused_imports)]
+use std::cmp::{max, min};
+use std::io::{stdin, stdout, BufWriter, Write};
+
+#[derive(Default)]
+struct Scanner {
+    buffer: Vec<String>,
+}
+impl Scanner {
+    fn next<T: std::str::FromStr>(&mut self) -> T {
+        loop {
+            if let Some(token) = self.buffer.pop() {
+                return token.parse().ok().expect("oh no failed to parse");
+            }
+            let mut input = String::new();
+            stdin().read_line(&mut input).expect("eep i failed to read");
+            self.buffer = input.split_whitespace().rev().map(String::from).collect();
+        }
+    }
+}
+
+#[allow(dead_code)]
+fn main() {
+    let mut scan = Scanner::default();
+    let out = &mut BufWriter::new(stdout());
+
+    // write your program here, e.g.
+    let n: i32 = scan.next();
+    writeln!(out, "{}", n).ok();
+}