//--- pB ---//
import java.util.*;
import java.lang.*;
import java.io.*;

public class Main {
	public static void main (String[] args) throws java.lang.Exception {
		new Solution();
	}
}
class Solution {
	Scanner scanner;
	public Solution() {
		scanner = new Scanner(System.in);

		// scanner.nextLine();
		while (scanner.hasNext()) {
			run_case();
		}
	}
	private void run_case() {
		// scanner.nextLine();
		String line = scanner.nextLine();
		StringBuilder res = new StringBuilder();
		for (int i=0; i<line.length(); i++) {
			res.append('x');
		}
		System.out.println(res.toString());
		return;
	}

	private int[] strToIntArray(String str) {
	    String[] vals = str.split("\\s+");
	    int sz = vals.length;
	    int[] res = new int[sz];
	    for (int i=0; i<sz; i++) {
	        res[i] = Integer.parseInt(vals[i]);
	    }
	    return res;
	}

}

class LCS {
    int[][] dp;
    public int lcs(String A, String B) {
        int sz_a = A.length(), sz_b = B.length();
        dp = new int[sz_a+1][sz_b+1];

        for (int i=0; i<=sz_a; i++) dp[i][0] = 0;
        for (int j=0; j<=sz_b; j++) dp[0][j] = 0;

        for (int i=1; i<=sz_a; i++) {
            for (int j=1; j<=sz_b; j++) {
                if (A.charAt(i-1) == B.charAt(j-1)) {
                    dp[i][j] = dp[i-1][j-1] + 1;
                } else {
                    dp[i][j] = Math.max(dp[i-1][j], dp[i][j-1]);
                }
            }
        }

        return dp[sz_a][sz_b];
    }

    public String getLCS(String X, String Y) {
		int m = X.length();
		int n = Y.length();
        // Following code is used to print LCS
        int index = dp[m][n];
        int temp = index;

        // Create a character array to store the lcs string
        char[] lcs = new char[index+1];
        lcs[index] = '\0'; // Set the terminating character

        // Start from the right-most-bottom-most corner and
        // one by one store characters in lcs[]
        int i = m;
		int j = n;
        while (i > 0 && j > 0) {
            // If current character in X[] and Y are same, then
            // current character is part of LCS
            if (X.charAt(i-1) == Y.charAt(j-1))
            {
                // Put current character in result
                lcs[index-1] = X.charAt(i-1);

                // reduce values of i, j and index
                i--;
                j--;
                index--;
            }

            // If not same, then find the larger of two and
            // go in the direction of larger value
            else if (dp[i-1][j] > dp[i][j-1])
                i--;
            else
                j--;
        }

        // // Print the lcs
        // System.out.print("LCS of "+X+" and "+Y+" is ");
        // for(int k=0;k<=temp;k++)
        //     System.out.print(lcs[k]);
        //

        return String.valueOf(lcs).substring(0, temp+2);
    }
} import java.util.*; util.* java import java.lang.*; lang.* java import java.io.*; io.* java public class Main {
	public static void main (String[] args) throws java.lang.Exception {
		new Solution();
	}
} Main public static void main (String[] args) throws java.lang.Exception {
		new Solution();
	} main {
		new Solution();
	} new Solution() String[] args args class Solution {
	Scanner scanner;
	public Solution() {
		scanner = new Scanner(System.in);

		// scanner.nextLine();
		while (scanner.hasNext()) {
			run_case();
		}
	}
	private void run_case() {
		// scanner.nextLine();
		String line = scanner.nextLine();
		StringBuilder res = new StringBuilder();
		for (int i=0; i<line.length(); i++) {
			res.append('x');
		}
		System.out.println(res.toString());
		return;
	}

	private int[] strToIntArray(String str) {
	    String[] vals = str.split("\\s+");
	    int sz = vals.length;
	    int[] res = new int[sz];
	    for (int i=0; i<sz; i++) {
	        res[i] = Integer.parseInt(vals[i]);
	    }
	    return res;
	}

} Solution Scanner scanner; scanner public Solution() {
		scanner = new Scanner(System.in);

		// scanner.nextLine();
		while (scanner.hasNext()) {
			run_case();
		}
	} Solution {
		scanner = new Scanner(System.in);

		// scanner.nextLine();
		while (scanner.hasNext()) {
			run_case();
		}
	} scanner = new Scanner(System.in) scanner new Scanner(System.in) while (scanner.hasNext()) {
			run_case();
		} scanner.hasNext() scanner.hasNext scanner {
			run_case();
		} run_case() run_case private void run_case() {
		// scanner.nextLine();
		String line = scanner.nextLine();
		StringBuilder res = new StringBuilder();
		for (int i=0; i<line.length(); i++) {
			res.append('x');
		}
		System.out.println(res.toString());
		return;
	} run_case {
		// scanner.nextLine();
		String line = scanner.nextLine();
		StringBuilder res = new StringBuilder();
		for (int i=0; i<line.length(); i++) {
			res.append('x');
		}
		System.out.println(res.toString());
		return;
	} String line = scanner.nextLine(); line scanner.nextLine() scanner.nextLine scanner StringBuilder res = new StringBuilder(); res new StringBuilder() for (int i=0; i<line.length(); i++) {
			res.append('x');
		} int i=0; int i=0; i 0 i<line.length() i line.length() line.length line i++ i++ i {
			res.append('x');
		} {
			res.append('x');
		} res.append('x') res.append res 'x' System.out.println(res.toString()) System.out.println System.out System System.out res.toString() res.toString res return; private int[] strToIntArray(String str) {
	    String[] vals = str.split("\\s+");
	    int sz = vals.length;
	    int[] res = new int[sz];
	    for (int i=0; i<sz; i++) {
	        res[i] = Integer.parseInt(vals[i]);
	    }
	    return res;
	} strToIntArray {
	    String[] vals = str.split("\\s+");
	    int sz = vals.length;
	    int[] res = new int[sz];
	    for (int i=0; i<sz; i++) {
	        res[i] = Integer.parseInt(vals[i]);
	    }
	    return res;
	} String[] vals = str.split("\\s+"); vals str.split("\\s+") str.split str "\\s+" int sz = vals.length; sz vals.length vals vals.length int[] res = new int[sz]; res new int[sz] sz for (int i=0; i<sz; i++) {
	        res[i] = Integer.parseInt(vals[i]);
	    } int i=0; int i=0; i 0 i<sz i sz i++ i++ i {
	        res[i] = Integer.parseInt(vals[i]);
	    } {
	        res[i] = Integer.parseInt(vals[i]);
	    } res[i] = Integer.parseInt(vals[i]) res[i] res i Integer.parseInt(vals[i]) Integer.parseInt Integer vals[i] vals i return res; res String str str class LCS {
    int[][] dp;
    public int lcs(String A, String B) {
        int sz_a = A.length(), sz_b = B.length();
        dp = new int[sz_a+1][sz_b+1];

        for (int i=0; i<=sz_a; i++) dp[i][0] = 0;
        for (int j=0; j<=sz_b; j++) dp[0][j] = 0;

        for (int i=1; i<=sz_a; i++) {
            for (int j=1; j<=sz_b; j++) {
                if (A.charAt(i-1) == B.charAt(j-1)) {
                    dp[i][j] = dp[i-1][j-1] + 1;
                } else {
                    dp[i][j] = Math.max(dp[i-1][j], dp[i][j-1]);
                }
            }
        }

        return dp[sz_a][sz_b];
    }

    public String getLCS(String X, String Y) {
		int m = X.length();
		int n = Y.length();
        // Following code is used to print LCS
        int index = dp[m][n];
        int temp = index;

        // Create a character array to store the lcs string
        char[] lcs = new char[index+1];
        lcs[index] = '\0'; // Set the terminating character

        // Start from the right-most-bottom-most corner and
        // one by one store characters in lcs[]
        int i = m;
		int j = n;
        while (i > 0 && j > 0) {
            // If current character in X[] and Y are same, then
            // current character is part of LCS
            if (X.charAt(i-1) == Y.charAt(j-1))
            {
                // Put current character in result
                lcs[index-1] = X.charAt(i-1);

                // reduce values of i, j and index
                i--;
                j--;
                index--;
            }

            // If not same, then find the larger of two and
            // go in the direction of larger value
            else if (dp[i-1][j] > dp[i][j-1])
                i--;
            else
                j--;
        }

        // // Print the lcs
        // System.out.print("LCS of "+X+" and "+Y+" is ");
        // for(int k=0;k<=temp;k++)
        //     System.out.print(lcs[k]);
        //

        return String.valueOf(lcs).substring(0, temp+2);
    }
} LCS int[][] dp; dp public int lcs(String A, String B) {
        int sz_a = A.length(), sz_b = B.length();
        dp = new int[sz_a+1][sz_b+1];

        for (int i=0; i<=sz_a; i++) dp[i][0] = 0;
        for (int j=0; j<=sz_b; j++) dp[0][j] = 0;

        for (int i=1; i<=sz_a; i++) {
            for (int j=1; j<=sz_b; j++) {
                if (A.charAt(i-1) == B.charAt(j-1)) {
                    dp[i][j] = dp[i-1][j-1] + 1;
                } else {
                    dp[i][j] = Math.max(dp[i-1][j], dp[i][j-1]);
                }
            }
        }

        return dp[sz_a][sz_b];
    } lcs {
        int sz_a = A.length(), sz_b = B.length();
        dp = new int[sz_a+1][sz_b+1];

        for (int i=0; i<=sz_a; i++) dp[i][0] = 0;
        for (int j=0; j<=sz_b; j++) dp[0][j] = 0;

        for (int i=1; i<=sz_a; i++) {
            for (int j=1; j<=sz_b; j++) {
                if (A.charAt(i-1) == B.charAt(j-1)) {
                    dp[i][j] = dp[i-1][j-1] + 1;
                } else {
                    dp[i][j] = Math.max(dp[i-1][j], dp[i][j-1]);
                }
            }
        }

        return dp[sz_a][sz_b];
    } int sz_a = A.length() sz_a A.length() A.length A sz_b = B.length(); sz_b B.length() B.length B dp = new int[sz_a+1][sz_b+1] dp new int[sz_a+1][sz_b+1] sz_a+1 sz_a 1 sz_b+1 sz_b 1 for (int i=0; i<=sz_a; i++) dp[i][0] = 0; int i=0; int i=0; i 0 i<=sz_a i sz_a i++ i++ i dp[i][0] = 0; dp[i][0] = 0 dp[i][0] dp[i] dp i 0 0 for (int j=0; j<=sz_b; j++) dp[0][j] = 0; int j=0; int j=0; j 0 j<=sz_b j sz_b j++ j++ j dp[0][j] = 0; dp[0][j] = 0 dp[0][j] dp[0] dp 0 j 0 for (int i=1; i<=sz_a; i++) {
            for (int j=1; j<=sz_b; j++) {
                if (A.charAt(i-1) == B.charAt(j-1)) {
                    dp[i][j] = dp[i-1][j-1] + 1;
                } else {
                    dp[i][j] = Math.max(dp[i-1][j], dp[i][j-1]);
                }
            }
        } int i=1; int i=1; i 1 i<=sz_a i sz_a i++ i++ i {
            for (int j=1; j<=sz_b; j++) {
                if (A.charAt(i-1) == B.charAt(j-1)) {
                    dp[i][j] = dp[i-1][j-1] + 1;
                } else {
                    dp[i][j] = Math.max(dp[i-1][j], dp[i][j-1]);
                }
            }
        } {
            for (int j=1; j<=sz_b; j++) {
                if (A.charAt(i-1) == B.charAt(j-1)) {
                    dp[i][j] = dp[i-1][j-1] + 1;
                } else {
                    dp[i][j] = Math.max(dp[i-1][j], dp[i][j-1]);
                }
            }
        } for (int j=1; j<=sz_b; j++) {
                if (A.charAt(i-1) == B.charAt(j-1)) {
                    dp[i][j] = dp[i-1][j-1] + 1;
                } else {
                    dp[i][j] = Math.max(dp[i-1][j], dp[i][j-1]);
                }
            } int j=1; int j=1; j 1 j<=sz_b j sz_b j++ j++ j {
                if (A.charAt(i-1) == B.charAt(j-1)) {
                    dp[i][j] = dp[i-1][j-1] + 1;
                } else {
                    dp[i][j] = Math.max(dp[i-1][j], dp[i][j-1]);
                }
            } {
                if (A.charAt(i-1) == B.charAt(j-1)) {
                    dp[i][j] = dp[i-1][j-1] + 1;
                } else {
                    dp[i][j] = Math.max(dp[i-1][j], dp[i][j-1]);
                }
            } if (A.charAt(i-1) == B.charAt(j-1)) {
                    dp[i][j] = dp[i-1][j-1] + 1;
                } else {
                    dp[i][j] = Math.max(dp[i-1][j], dp[i][j-1]);
                } A.charAt(i-1) == B.charAt(j-1) A.charAt(i-1) A.charAt A i-1 i 1 B.charAt(j-1) B.charAt B j-1 j 1 {
                    dp[i][j] = dp[i-1][j-1] + 1;
                } dp[i][j] = dp[i-1][j-1] + 1 dp[i][j] dp[i] dp i j dp[i-1][j-1] + 1 dp[i-1][j-1] dp[i-1] dp i-1 i 1 j-1 j 1 1 {
                    dp[i][j] = Math.max(dp[i-1][j], dp[i][j-1]);
                } dp[i][j] = Math.max(dp[i-1][j], dp[i][j-1]) dp[i][j] dp[i] dp i j Math.max(dp[i-1][j], dp[i][j-1]) Math.max Math dp[i-1][j] dp[i-1] dp i-1 i 1 j dp[i][j-1] dp[i] dp i j-1 j 1 return dp[sz_a][sz_b]; dp[sz_a][sz_b] dp[sz_a] dp sz_a sz_b String A A String B B public String getLCS(String X, String Y) {
		int m = X.length();
		int n = Y.length();
        // Following code is used to print LCS
        int index = dp[m][n];
        int temp = index;

        // Create a character array to store the lcs string
        char[] lcs = new char[index+1];
        lcs[index] = '\0'; // Set the terminating character

        // Start from the right-most-bottom-most corner and
        // one by one store characters in lcs[]
        int i = m;
		int j = n;
        while (i > 0 && j > 0) {
            // If current character in X[] and Y are same, then
            // current character is part of LCS
            if (X.charAt(i-1) == Y.charAt(j-1))
            {
                // Put current character in result
                lcs[index-1] = X.charAt(i-1);

                // reduce values of i, j and index
                i--;
                j--;
                index--;
            }

            // If not same, then find the larger of two and
            // go in the direction of larger value
            else if (dp[i-1][j] > dp[i][j-1])
                i--;
            else
                j--;
        }

        // // Print the lcs
        // System.out.print("LCS of "+X+" and "+Y+" is ");
        // for(int k=0;k<=temp;k++)
        //     System.out.print(lcs[k]);
        //

        return String.valueOf(lcs).substring(0, temp+2);
    } getLCS {
		int m = X.length();
		int n = Y.length();
        // Following code is used to print LCS
        int index = dp[m][n];
        int temp = index;

        // Create a character array to store the lcs string
        char[] lcs = new char[index+1];
        lcs[index] = '\0'; // Set the terminating character

        // Start from the right-most-bottom-most corner and
        // one by one store characters in lcs[]
        int i = m;
		int j = n;
        while (i > 0 && j > 0) {
            // If current character in X[] and Y are same, then
            // current character is part of LCS
            if (X.charAt(i-1) == Y.charAt(j-1))
            {
                // Put current character in result
                lcs[index-1] = X.charAt(i-1);

                // reduce values of i, j and index
                i--;
                j--;
                index--;
            }

            // If not same, then find the larger of two and
            // go in the direction of larger value
            else if (dp[i-1][j] > dp[i][j-1])
                i--;
            else
                j--;
        }

        // // Print the lcs
        // System.out.print("LCS of "+X+" and "+Y+" is ");
        // for(int k=0;k<=temp;k++)
        //     System.out.print(lcs[k]);
        //

        return String.valueOf(lcs).substring(0, temp+2);
    } int m = X.length(); m X.length() X.length X int n = Y.length(); n Y.length() Y.length Y int index = dp[m][n]; index dp[m][n] dp[m] dp m n int temp = index; temp index char[] lcs = new char[index+1]; lcs new char[index+1] index+1 index 1 lcs[index] = '\0' lcs[index] lcs index '\0' int i = m; i m int j = n; j n while (i > 0 && j > 0) {
            // If current character in X[] and Y are same, then
            // current character is part of LCS
            if (X.charAt(i-1) == Y.charAt(j-1))
            {
                // Put current character in result
                lcs[index-1] = X.charAt(i-1);

                // reduce values of i, j and index
                i--;
                j--;
                index--;
            }

            // If not same, then find the larger of two and
            // go in the direction of larger value
            else if (dp[i-1][j] > dp[i][j-1])
                i--;
            else
                j--;
        } i > 0 && j > 0 i > 0 i 0 j > 0 j 0 {
            // If current character in X[] and Y are same, then
            // current character is part of LCS
            if (X.charAt(i-1) == Y.charAt(j-1))
            {
                // Put current character in result
                lcs[index-1] = X.charAt(i-1);

                // reduce values of i, j and index
                i--;
                j--;
                index--;
            }

            // If not same, then find the larger of two and
            // go in the direction of larger value
            else if (dp[i-1][j] > dp[i][j-1])
                i--;
            else
                j--;
        } if (X.charAt(i-1) == Y.charAt(j-1))
            {
                // Put current character in result
                lcs[index-1] = X.charAt(i-1);

                // reduce values of i, j and index
                i--;
                j--;
                index--;
            }

            // If not same, then find the larger of two and
            // go in the direction of larger value
            else if (dp[i-1][j] > dp[i][j-1])
                i--;
            else
                j--; X.charAt(i-1) == Y.charAt(j-1) X.charAt(i-1) X.charAt X i-1 i 1 Y.charAt(j-1) Y.charAt Y j-1 j 1 {
                // Put current character in result
                lcs[index-1] = X.charAt(i-1);

                // reduce values of i, j and index
                i--;
                j--;
                index--;
            } lcs[index-1] = X.charAt(i-1) lcs[index-1] lcs index-1 index 1 X.charAt(i-1) X.charAt X i-1 i 1 i-- i j-- j index-- index if (dp[i-1][j] > dp[i][j-1])
                i--;
            else
                j--; dp[i-1][j] > dp[i][j-1] dp[i-1][j] dp[i-1] dp i-1 i 1 j dp[i][j-1] dp[i] dp i j-1 j 1 i-- i j-- j return String.valueOf(lcs).substring(0, temp+2); String.valueOf(lcs).substring(0, temp+2) String.valueOf(lcs).substring String.valueOf(lcs) String.valueOf String lcs 0 temp+2 temp 2 String X X String Y Y public class Main {
	public static void main (String[] args) throws java.lang.Exception {
		new Solution();
	}
} public class Main {
	public static void main (String[] args) throws java.lang.Exception {
		new Solution();
	}
} Main
//--- pB ---//
import java.util.*;
import java.lang.*;
import java.io.*;

public class Main {
	public static void main (String[] args) throws java.lang.Exception {
		new Solution();
	}
}
class Solution {
	Scanner scanner;
	public Solution() {
		scanner = new Scanner(System.in);

		// scanner.nextLine();
		while (scanner.hasNext()) {
			run_case();
		}
	}
	private void run_case() {
		// scanner.nextLine();
		String line = scanner.nextLine();
		StringBuilder res = new StringBuilder();
		for (int i=0; i<line.length(); i++) {
			res.append('x');
		}
		System.out.println(res.toString());
		return;
	}

	private int[] strToIntArray(String str) {
	    String[] vals = str.split("\\s+");
	    int sz = vals.length;
	    int[] res = new int[sz];
	    for (int i=0; i<sz; i++) {
	        res[i] = Integer.parseInt(vals[i]);
	    }
	    return res;
	}

}

class LCS {
    int[][] dp;
    public int lcs(String A, String B) {
        int sz_a = A.length(), sz_b = B.length();
        dp = new int[sz_a+1][sz_b+1];

        for (int i=0; i<=sz_a; i++) dp[i][0] = 0;
        for (int j=0; j<=sz_b; j++) dp[0][j] = 0;

        for (int i=1; i<=sz_a; i++) {
            for (int j=1; j<=sz_b; j++) {
                if (A.charAt(i-1) == B.charAt(j-1)) {
                    dp[i][j] = dp[i-1][j-1] + 1;
                } else {
                    dp[i][j] = Math.max(dp[i-1][j], dp[i][j-1]);
                }
            }
        }

        return dp[sz_a][sz_b];
    }

    public String getLCS(String X, String Y) {
		int m = X.length();
		int n = Y.length();
        // Following code is used to print LCS
        int index = dp[m][n];
        int temp = index;

        // Create a character array to store the lcs string
        char[] lcs = new char[index+1];
        lcs[index] = '\0'; // Set the terminating character

        // Start from the right-most-bottom-most corner and
        // one by one store characters in lcs[]
        int i = m;
		int j = n;
        while (i > 0 && j > 0) {
            // If current character in X[] and Y are same, then
            // current character is part of LCS
            if (X.charAt(i-1) == Y.charAt(j-1))
            {
                // Put current character in result
                lcs[index-1] = X.charAt(i-1);

                // reduce values of i, j and index
                i--;
                j--;
                index--;
            }

            // If not same, then find the larger of two and
            // go in the direction of larger value
            else if (dp[i-1][j] > dp[i][j-1])
                i--;
            else
                j--;
        }

        // // Print the lcs
        // System.out.print("LCS of "+X+" and "+Y+" is ");
        // for(int k=0;k<=temp;k++)
        //     System.out.print(lcs[k]);
        //

        return String.valueOf(lcs).substring(0, temp+2);
    }
}
