import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        try (Scanner sc = new Scanner(System.in)) {
            String line = sc.nextLine();
            String answer = "";
            int length = line.length();
            for (int i = 0; i < length; i++) {
                char ch = line.charAt(i);
                if (Character.isLowerCase(ch)) {
                    ch=Character.toUpperCase(ch);
                } else {
                    ch=Character.toLowerCase(ch);
                }
                answer+=ch;
            }
            System.out.println(answer);
        }
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        try (Scanner sc = new Scanner(System.in)) {
            String line = sc.nextLine();
            String answer = "";
            int length = line.length();
            for (int i = 0; i < length; i++) {
                char ch = line.charAt(i);
                if (Character.isLowerCase(ch)) {
                    ch=Character.toUpperCase(ch);
                } else {
                    ch=Character.toLowerCase(ch);
                }
                answer+=ch;
            }
            System.out.println(answer);
        }
    }
} Main public static void main(String[] args) {
        try (Scanner sc = new Scanner(System.in)) {
            String line = sc.nextLine();
            String answer = "";
            int length = line.length();
            for (int i = 0; i < length; i++) {
                char ch = line.charAt(i);
                if (Character.isLowerCase(ch)) {
                    ch=Character.toUpperCase(ch);
                } else {
                    ch=Character.toLowerCase(ch);
                }
                answer+=ch;
            }
            System.out.println(answer);
        }
    } main {
        try (Scanner sc = new Scanner(System.in)) {
            String line = sc.nextLine();
            String answer = "";
            int length = line.length();
            for (int i = 0; i < length; i++) {
                char ch = line.charAt(i);
                if (Character.isLowerCase(ch)) {
                    ch=Character.toUpperCase(ch);
                } else {
                    ch=Character.toLowerCase(ch);
                }
                answer+=ch;
            }
            System.out.println(answer);
        }
    } try (Scanner sc = new Scanner(System.in)) {
            String line = sc.nextLine();
            String answer = "";
            int length = line.length();
            for (int i = 0; i < length; i++) {
                char ch = line.charAt(i);
                if (Character.isLowerCase(ch)) {
                    ch=Character.toUpperCase(ch);
                } else {
                    ch=Character.toLowerCase(ch);
                }
                answer+=ch;
            }
            System.out.println(answer);
        } {
            String line = sc.nextLine();
            String answer = "";
            int length = line.length();
            for (int i = 0; i < length; i++) {
                char ch = line.charAt(i);
                if (Character.isLowerCase(ch)) {
                    ch=Character.toUpperCase(ch);
                } else {
                    ch=Character.toLowerCase(ch);
                }
                answer+=ch;
            }
            System.out.println(answer);
        } Scanner sc = new Scanner(System.in) Scanner sc = new Scanner(System.in) new Scanner(System.in) String line = sc.nextLine(); line sc.nextLine() sc.nextLine sc String answer = ""; answer "" int length = line.length(); length line.length() line.length line for (int i = 0; i < length; i++) {
                char ch = line.charAt(i);
                if (Character.isLowerCase(ch)) {
                    ch=Character.toUpperCase(ch);
                } else {
                    ch=Character.toLowerCase(ch);
                }
                answer+=ch;
            } int i = 0; int i = 0; i 0 i < length i length i++ i++ i {
                char ch = line.charAt(i);
                if (Character.isLowerCase(ch)) {
                    ch=Character.toUpperCase(ch);
                } else {
                    ch=Character.toLowerCase(ch);
                }
                answer+=ch;
            } {
                char ch = line.charAt(i);
                if (Character.isLowerCase(ch)) {
                    ch=Character.toUpperCase(ch);
                } else {
                    ch=Character.toLowerCase(ch);
                }
                answer+=ch;
            } char ch = line.charAt(i); ch line.charAt(i) line.charAt line i if (Character.isLowerCase(ch)) {
                    ch=Character.toUpperCase(ch);
                } else {
                    ch=Character.toLowerCase(ch);
                } Character.isLowerCase(ch) Character.isLowerCase Character ch {
                    ch=Character.toUpperCase(ch);
                } ch=Character.toUpperCase(ch) ch Character.toUpperCase(ch) Character.toUpperCase Character ch {
                    ch=Character.toLowerCase(ch);
                } ch=Character.toLowerCase(ch) ch Character.toLowerCase(ch) Character.toLowerCase Character ch answer+=ch answer ch System.out.println(answer) System.out.println System.out System System.out answer String[] args args public class Main {
    public static void main(String[] args) {
        try (Scanner sc = new Scanner(System.in)) {
            String line = sc.nextLine();
            String answer = "";
            int length = line.length();
            for (int i = 0; i < length; i++) {
                char ch = line.charAt(i);
                if (Character.isLowerCase(ch)) {
                    ch=Character.toUpperCase(ch);
                } else {
                    ch=Character.toLowerCase(ch);
                }
                answer+=ch;
            }
            System.out.println(answer);
        }
    }
} public class Main {
    public static void main(String[] args) {
        try (Scanner sc = new Scanner(System.in)) {
            String line = sc.nextLine();
            String answer = "";
            int length = line.length();
            for (int i = 0; i < length; i++) {
                char ch = line.charAt(i);
                if (Character.isLowerCase(ch)) {
                    ch=Character.toUpperCase(ch);
                } else {
                    ch=Character.toLowerCase(ch);
                }
                answer+=ch;
            }
            System.out.println(answer);
        }
    }
} Main
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        try (Scanner sc = new Scanner(System.in)) {
            String line = sc.nextLine();
            String answer = "";
            int length = line.length();
            for (int i = 0; i < length; i++) {
                char ch = line.charAt(i);
                if (Character.isLowerCase(ch)) {
                    ch=Character.toUpperCase(ch);
                } else {
                    ch=Character.toLowerCase(ch);
                }
                answer+=ch;
            }
            System.out.println(answer);
        }
    }
}
