import java.util.Scanner;

public class ReplaceBlack {
	public static String replaceBlack(String[] str){
		String s="";
		int i;
		for( i=0;i<str.length-1;i++){
			s=s+str[i]+"20%";
		}
		s+=str[i];
		return s;
	}
	
	public static void main(String[] args) {
		Scanner s=new Scanner(System.in);
		String str=s.nextLine();
		String[] newStr=str.split(" ");
		System.out.println(ReplaceBlack.replaceBlack(newStr));
	}
}