public class Main{
	public static void main(String[] args){
		String str = new java.util.Scanner(System.in).nextLine();
		String answer ="";
		for(int i = 0;i<str.length();i++){
			answer += "x";
		}
		System.out.println(answer);
	}

}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz