import java.util.Scanner;

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

    int a = scanner.nextInt();
    int b = scanner.nextInt();
    int c = Integer.parseInt(Integer.toString(a) + b);
    int i = 1;
    while (i * i <= c) i++;
    i--;
    if (i * i == c) 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 = scanner.nextInt();
    int b = scanner.nextInt();
    int c = Integer.parseInt(Integer.toString(a) + b);
    int i = 1;
    while (i * i <= c) i++;
    i--;
    if (i * i == c) System.out.println("Yes");
    else System.out.println("No");
  }
} Main public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);

    int a = scanner.nextInt();
    int b = scanner.nextInt();
    int c = Integer.parseInt(Integer.toString(a) + b);
    int i = 1;
    while (i * i <= c) i++;
    i--;
    if (i * i == c) System.out.println("Yes");
    else System.out.println("No");
  } main {
    Scanner scanner = new Scanner(System.in);

    int a = scanner.nextInt();
    int b = scanner.nextInt();
    int c = Integer.parseInt(Integer.toString(a) + b);
    int i = 1;
    while (i * i <= c) i++;
    i--;
    if (i * i == c) System.out.println("Yes");
    else System.out.println("No");
  } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) int a = scanner.nextInt(); a scanner.nextInt() scanner.nextInt scanner int b = scanner.nextInt(); b scanner.nextInt() scanner.nextInt scanner int c = Integer.parseInt(Integer.toString(a) + b); c Integer.parseInt(Integer.toString(a) + b) Integer.parseInt Integer Integer.toString(a) + b Integer.toString(a) Integer.toString Integer a b int i = 1; i 1 while (i * i <= c) i++; i * i <= c i * i i i c i++ i i-- i if (i * i == c) System.out.println("Yes");
    else System.out.println("No"); i * i == c i * i i i c System.out.println("Yes") System.out.println System.out System System.out "Yes" 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 = scanner.nextInt();
    int b = scanner.nextInt();
    int c = Integer.parseInt(Integer.toString(a) + b);
    int i = 1;
    while (i * i <= c) i++;
    i--;
    if (i * i == c) 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 = scanner.nextInt();
    int b = scanner.nextInt();
    int c = Integer.parseInt(Integer.toString(a) + b);
    int i = 1;
    while (i * i <= c) i++;
    i--;
    if (i * i == c) 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 = scanner.nextInt();
    int b = scanner.nextInt();
    int c = Integer.parseInt(Integer.toString(a) + b);
    int i = 1;
    while (i * i <= c) i++;
    i--;
    if (i * i == c) System.out.println("Yes");
    else System.out.println("No");
  }
}
