import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int A = Integer.parseInt(scanner.next());
        int B = Integer.parseInt(scanner.next());
        String S = scanner.next();
        scanner.close();

        if (S.matches(String.format("^[0-9]{%d}-[0-9]{%d}", A, B))) {
            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);
        int A = Integer.parseInt(scanner.next());
        int B = Integer.parseInt(scanner.next());
        String S = scanner.next();
        scanner.close();

        if (S.matches(String.format("^[0-9]{%d}-[0-9]{%d}", A, B))) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
} Main public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int A = Integer.parseInt(scanner.next());
        int B = Integer.parseInt(scanner.next());
        String S = scanner.next();
        scanner.close();

        if (S.matches(String.format("^[0-9]{%d}-[0-9]{%d}", A, B))) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    } main {
        Scanner scanner = new Scanner(System.in);
        int A = Integer.parseInt(scanner.next());
        int B = Integer.parseInt(scanner.next());
        String S = scanner.next();
        scanner.close();

        if (S.matches(String.format("^[0-9]{%d}-[0-9]{%d}", A, B))) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) int A = Integer.parseInt(scanner.next()); A Integer.parseInt(scanner.next()) Integer.parseInt Integer scanner.next() scanner.next scanner int B = Integer.parseInt(scanner.next()); B Integer.parseInt(scanner.next()) Integer.parseInt Integer scanner.next() scanner.next scanner String S = scanner.next(); S scanner.next() scanner.next scanner scanner.close() scanner.close scanner if (S.matches(String.format("^[0-9]{%d}-[0-9]{%d}", A, B))) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        } S.matches(String.format("^[0-9]{%d}-[0-9]{%d}", A, B)) S.matches S String.format("^[0-9]{%d}-[0-9]{%d}", A, B) String.format String "^[0-9]{%d}-[0-9]{%d}" A B {
            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);
        int A = Integer.parseInt(scanner.next());
        int B = Integer.parseInt(scanner.next());
        String S = scanner.next();
        scanner.close();

        if (S.matches(String.format("^[0-9]{%d}-[0-9]{%d}", A, B))) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
} public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int A = Integer.parseInt(scanner.next());
        int B = Integer.parseInt(scanner.next());
        String S = scanner.next();
        scanner.close();

        if (S.matches(String.format("^[0-9]{%d}-[0-9]{%d}", A, B))) {
            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);
        int A = Integer.parseInt(scanner.next());
        int B = Integer.parseInt(scanner.next());
        String S = scanner.next();
        scanner.close();

        if (S.matches(String.format("^[0-9]{%d}-[0-9]{%d}", A, B))) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
}
