import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class Main {

    public static void main(String[] args) throws Exception {

        InputStreamReader is = new InputStreamReader(System.in);
        BufferedReader reader = new BufferedReader(is);

        List<String> mylist = new ArrayList<>();

        // 標準入力からの値を変数strinputに代入
        String strinput = reader.readLine();

        while (strinput != null) {

            mylist.add(strinput);
            strinput = reader.readLine();

        }

        String s = mylist.get(0);
        int l = s.length();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < l; i++) {
            sb.append("x");
        }
        System.out.println(sb.toString());

    }

} import java.io.BufferedReader; BufferedReader java.io import java.io.InputStreamReader; InputStreamReader java.io import java.util.ArrayList; ArrayList java.util import java.util.List; List java.util public class Main {

    public static void main(String[] args) throws Exception {

        InputStreamReader is = new InputStreamReader(System.in);
        BufferedReader reader = new BufferedReader(is);

        List<String> mylist = new ArrayList<>();

        // 標準入力からの値を変数strinputに代入
        String strinput = reader.readLine();

        while (strinput != null) {

            mylist.add(strinput);
            strinput = reader.readLine();

        }

        String s = mylist.get(0);
        int l = s.length();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < l; i++) {
            sb.append("x");
        }
        System.out.println(sb.toString());

    }

} Main public static void main(String[] args) throws Exception {

        InputStreamReader is = new InputStreamReader(System.in);
        BufferedReader reader = new BufferedReader(is);

        List<String> mylist = new ArrayList<>();

        // 標準入力からの値を変数strinputに代入
        String strinput = reader.readLine();

        while (strinput != null) {

            mylist.add(strinput);
            strinput = reader.readLine();

        }

        String s = mylist.get(0);
        int l = s.length();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < l; i++) {
            sb.append("x");
        }
        System.out.println(sb.toString());

    } main {

        InputStreamReader is = new InputStreamReader(System.in);
        BufferedReader reader = new BufferedReader(is);

        List<String> mylist = new ArrayList<>();

        // 標準入力からの値を変数strinputに代入
        String strinput = reader.readLine();

        while (strinput != null) {

            mylist.add(strinput);
            strinput = reader.readLine();

        }

        String s = mylist.get(0);
        int l = s.length();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < l; i++) {
            sb.append("x");
        }
        System.out.println(sb.toString());

    } InputStreamReader is = new InputStreamReader(System.in); is new InputStreamReader(System.in) BufferedReader reader = new BufferedReader(is); reader new BufferedReader(is) List<String> mylist = new ArrayList<>(); mylist new ArrayList<>() String strinput = reader.readLine(); strinput reader.readLine() reader.readLine reader while (strinput != null) {

            mylist.add(strinput);
            strinput = reader.readLine();

        } strinput != null strinput null {

            mylist.add(strinput);
            strinput = reader.readLine();

        } mylist.add(strinput) mylist.add mylist strinput strinput = reader.readLine() strinput reader.readLine() reader.readLine reader String s = mylist.get(0); s mylist.get(0) mylist.get mylist 0 int l = s.length(); l s.length() s.length s StringBuffer sb = new StringBuffer(); sb new StringBuffer() for (int i = 0; i < l; i++) {
            sb.append("x");
        } int i = 0; int i = 0; i 0 i < l i l i++ i++ i {
            sb.append("x");
        } {
            sb.append("x");
        } sb.append("x") sb.append sb "x" System.out.println(sb.toString()) System.out.println System.out System System.out sb.toString() sb.toString sb String[] args args public class Main {

    public static void main(String[] args) throws Exception {

        InputStreamReader is = new InputStreamReader(System.in);
        BufferedReader reader = new BufferedReader(is);

        List<String> mylist = new ArrayList<>();

        // 標準入力からの値を変数strinputに代入
        String strinput = reader.readLine();

        while (strinput != null) {

            mylist.add(strinput);
            strinput = reader.readLine();

        }

        String s = mylist.get(0);
        int l = s.length();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < l; i++) {
            sb.append("x");
        }
        System.out.println(sb.toString());

    }

} public class Main {

    public static void main(String[] args) throws Exception {

        InputStreamReader is = new InputStreamReader(System.in);
        BufferedReader reader = new BufferedReader(is);

        List<String> mylist = new ArrayList<>();

        // 標準入力からの値を変数strinputに代入
        String strinput = reader.readLine();

        while (strinput != null) {

            mylist.add(strinput);
            strinput = reader.readLine();

        }

        String s = mylist.get(0);
        int l = s.length();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < l; i++) {
            sb.append("x");
        }
        System.out.println(sb.toString());

    }

} Main
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class Main {

    public static void main(String[] args) throws Exception {

        InputStreamReader is = new InputStreamReader(System.in);
        BufferedReader reader = new BufferedReader(is);

        List<String> mylist = new ArrayList<>();

        // 標準入力からの値を変数strinputに代入
        String strinput = reader.readLine();

        while (strinput != null) {

            mylist.add(strinput);
            strinput = reader.readLine();

        }

        String s = mylist.get(0);
        int l = s.length();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < l; i++) {
            sb.append("x");
        }
        System.out.println(sb.toString());

    }

}
