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();
    String s = a.concat(b);
    int num = Integer.parseInt(s);
    for (int i = 1; i <= 400; i++) {
      if (i * i == num) {
        System.out.println("Yes");
        return;
      }
    }
    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();
    String s = a.concat(b);
    int num = Integer.parseInt(s);
    for (int i = 1; i <= 400; i++) {
      if (i * i == num) {
        System.out.println("Yes");
        return;
      }
    }
    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();
    String s = a.concat(b);
    int num = Integer.parseInt(s);
    for (int i = 1; i <= 400; i++) {
      if (i * i == num) {
        System.out.println("Yes");
        return;
      }
    }
    System.out.println("No");
  } main {
    Scanner sc = new Scanner(System.in);
    String a = sc.next();
    String b = sc.next();
    String s = a.concat(b);
    int num = Integer.parseInt(s);
    for (int i = 1; i <= 400; i++) {
      if (i * i == num) {
        System.out.println("Yes");
        return;
      }
    }
    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 String s = a.concat(b); s a.concat(b) a.concat a b int num = Integer.parseInt(s); num Integer.parseInt(s) Integer.parseInt Integer s for (int i = 1; i <= 400; i++) {
      if (i * i == num) {
        System.out.println("Yes");
        return;
      }
    } int i = 1; int i = 1; i 1 i <= 400 i 400 i++ i++ i {
      if (i * i == num) {
        System.out.println("Yes");
        return;
      }
    } {
      if (i * i == num) {
        System.out.println("Yes");
        return;
      }
    } if (i * i == num) {
        System.out.println("Yes");
        return;
      } i * i == num i * i i i num {
        System.out.println("Yes");
        return;
      } System.out.println("Yes") System.out.println System.out System System.out "Yes" return; 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();
    String s = a.concat(b);
    int num = Integer.parseInt(s);
    for (int i = 1; i <= 400; i++) {
      if (i * i == num) {
        System.out.println("Yes");
        return;
      }
    }
    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();
    String s = a.concat(b);
    int num = Integer.parseInt(s);
    for (int i = 1; i <= 400; i++) {
      if (i * i == num) {
        System.out.println("Yes");
        return;
      }
    }
    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();
    String s = a.concat(b);
    int num = Integer.parseInt(s);
    for (int i = 1; i <= 400; i++) {
      if (i * i == num) {
        System.out.println("Yes");
        return;
      }
    }
    System.out.println("No");
  }
}