
import java.util.Scanner;

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

        char[] S = scanner.next().toCharArray();
        if (S[2] == S[3] && S[4] == S[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);

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

        char[] S = scanner.next().toCharArray();
        if (S[2] == S[3] && S[4] == S[5]) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
   } main {
        Scanner scanner = new Scanner(System.in);

        char[] S = scanner.next().toCharArray();
        if (S[2] == S[3] && S[4] == S[5]) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
   } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) char[] S = scanner.next().toCharArray(); S scanner.next().toCharArray() scanner.next().toCharArray scanner.next() scanner.next scanner if (S[2] == S[3] && S[4] == S[5]) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        } S[2] == S[3] && S[4] == S[5] S[2] == S[3] S[2] S 2 S[3] S 3 S[4] == S[5] S[4] S 4 S[5] S 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);

        char[] S = scanner.next().toCharArray();
        if (S[2] == S[3] && S[4] == S[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);

        char[] S = scanner.next().toCharArray();
        if (S[2] == S[3] && S[4] == S[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);

        char[] S = scanner.next().toCharArray();
        if (S[2] == S[3] && S[4] == S[5]) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
   }
}
