import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        int target = Integer.valueOf(a+b);
        boolean isSquare = false;

        for (int i = 1; i <= 100100; i++) {
            if (target == i*i) {
                isSquare = true;
                break;
            }
        }

        if (isSquare) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

    }
} import java.util.*; util.* java public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        int target = Integer.valueOf(a+b);
        boolean isSquare = false;

        for (int i = 1; i <= 100100; i++) {
            if (target == i*i) {
                isSquare = true;
                break;
            }
        }

        if (isSquare) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        int target = Integer.valueOf(a+b);
        boolean isSquare = false;

        for (int i = 1; i <= 100100; i++) {
            if (target == i*i) {
                isSquare = true;
                break;
            }
        }

        if (isSquare) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

    } main {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        int target = Integer.valueOf(a+b);
        boolean isSquare = false;

        for (int i = 1; i <= 100100; i++) {
            if (target == i*i) {
                isSquare = true;
                break;
            }
        }

        if (isSquare) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String a = sc.next(); a sc.next() sc.next sc String b = sc.next(); b sc.next() sc.next sc int target = Integer.valueOf(a+b); target Integer.valueOf(a+b) Integer.valueOf Integer a+b a b boolean isSquare = false; isSquare false for (int i = 1; i <= 100100; i++) {
            if (target == i*i) {
                isSquare = true;
                break;
            }
        } int i = 1; int i = 1; i 1 i <= 100100 i 100100 i++ i++ i {
            if (target == i*i) {
                isSquare = true;
                break;
            }
        } {
            if (target == i*i) {
                isSquare = true;
                break;
            }
        } if (target == i*i) {
                isSquare = true;
                break;
            } target == i*i target i*i i i {
                isSquare = true;
                break;
            } isSquare = true isSquare true break; if (isSquare) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        } isSquare {
            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 sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        int target = Integer.valueOf(a+b);
        boolean isSquare = false;

        for (int i = 1; i <= 100100; i++) {
            if (target == i*i) {
                isSquare = true;
                break;
            }
        }

        if (isSquare) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

    }
} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        int target = Integer.valueOf(a+b);
        boolean isSquare = false;

        for (int i = 1; i <= 100100; i++) {
            if (target == i*i) {
                isSquare = true;
                break;
            }
        }

        if (isSquare) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

    }
} Main
import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        int target = Integer.valueOf(a+b);
        boolean isSquare = false;

        for (int i = 1; i <= 100100; i++) {
            if (target == i*i) {
                isSquare = true;
                break;
            }
        }

        if (isSquare) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

    }
}
