import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
 
public class Main {
 
    public static void main(String[] args) {
        InputStreamReader isr = new InputStreamReader(System.in);
        BufferedReader br = new BufferedReader(isr);
 		String input = null;
      
        try {
            input = br.readLine();
            br.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
      
		int len = input.length();
        String ret = "";
      
      	for (int i = 0; i < len; i++){
          ret = ret + "x";
        }
      
        System.out.println(ret);
    }
 
}

/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