import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String input = scanner.nextLine();

        scanner.close();

        char[] c = input.toCharArray();

        if (c[2] == c[3] && c[4] == c[5]) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String input = scanner.nextLine();

        scanner.close();

        char[] c = input.toCharArray();

        if (c[2] == c[3] && c[4] == c[5]) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
} Main public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String input = scanner.nextLine();

        scanner.close();

        char[] c = input.toCharArray();

        if (c[2] == c[3] && c[4] == c[5]) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    } main {
        Scanner scanner = new Scanner(System.in);
        String input = scanner.nextLine();

        scanner.close();

        char[] c = input.toCharArray();

        if (c[2] == c[3] && c[4] == c[5]) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) String input = scanner.nextLine(); input scanner.nextLine() scanner.nextLine scanner scanner.close() scanner.close scanner char[] c = input.toCharArray(); c input.toCharArray() input.toCharArray input if (c[2] == c[3] && c[4] == c[5]) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        } c[2] == c[3] && c[4] == c[5] c[2] == c[3] c[2] c 2 c[3] c 3 c[4] == c[5] c[4] c 4 c[5] c 5 {
            System.out.println("Yes");
        } System.out.println("Yes") System.out.println System.out System System.out "Yes" {
            System.out.println("No");
        } System.out.println("No") System.out.println System.out System System.out "No" String[] args args public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String input = scanner.nextLine();

        scanner.close();

        char[] c = input.toCharArray();

        if (c[2] == c[3] && c[4] == c[5]) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
} public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String input = scanner.nextLine();

        scanner.close();

        char[] c = input.toCharArray();

        if (c[2] == c[3] && c[4] == c[5]) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String input = scanner.nextLine();

        scanner.close();

        char[] c = input.toCharArray();

        if (c[2] == c[3] && c[4] == c[5]) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
}