"use strict"
const Main = (input)=>{
  let xs = input.trim().split("\n").map(v=>parseInt(v,10));
  let a = xs[0]-0;
  //console.log(a);
  if(a >= 3200){
  console.log("pink");  
  }else{
  console.log("red");
  }
}
Main(require("fs").readFileSync("/dev/stdin","utf8"));
