  1 use std::io::*;
  2 use std::str::FromStr;
  3 
  4 fn read<T: FromStr>() -> T {
  5     let stdin = stdin();
  6     let stdin = stdin.lock();
  7     let token: String = stdin
  8         .bytes()
  9         .map(|c| c.expect("failed to read char") as char)~
 10         .skip_while(|c| c.is_whitespace())
 11         .take_while(|c| !c.is_whitespace())
 12         .collect();
 13     token.parse().ok().expect("failed to parse token")
 14 }
 15 fn main(){
 16     let _a: u32 = read();
 17     let _b: String = read();
 18 
 19     if _a >= 3200 {
 20         println!("{}", _b);
 21     }else{
 22         println!("red");
 23     };
 24 }
