import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int N = 0;
    if(b<10){
      N=10*a+b;
    }else if(10<=b&&b<100){
      N=100*a+b;
    }else{
      N=1000*a+b;
    }
  //  System.out.println(N);
    System.out.println(isSq(N));
    
  }
  
  //引数が平方数なら"Yes",違うなら"No"を返すメソッド
  public static String isSq(int N){
   String res = "No";
    for(int i=1;i<=(int)Math.ceil(Math.sqrt(N));i++){
             // System.out.println(i);
      if(i*i==N){
        //System.out.println(i);
        res="Yes";
        return res;
      }
    }
    return res;
        
    
  }
    
  

  
} import java.util.*; util.* java public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int N = 0;
    if(b<10){
      N=10*a+b;
    }else if(10<=b&&b<100){
      N=100*a+b;
    }else{
      N=1000*a+b;
    }
  //  System.out.println(N);
    System.out.println(isSq(N));
    
  }
  
  //引数が平方数なら"Yes",違うなら"No"を返すメソッド
  public static String isSq(int N){
   String res = "No";
    for(int i=1;i<=(int)Math.ceil(Math.sqrt(N));i++){
             // System.out.println(i);
      if(i*i==N){
        //System.out.println(i);
        res="Yes";
        return res;
      }
    }
    return res;
        
    
  }
    
  

  
} Main public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int N = 0;
    if(b<10){
      N=10*a+b;
    }else if(10<=b&&b<100){
      N=100*a+b;
    }else{
      N=1000*a+b;
    }
  //  System.out.println(N);
    System.out.println(isSq(N));
    
  } main {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int N = 0;
    if(b<10){
      N=10*a+b;
    }else if(10<=b&&b<100){
      N=100*a+b;
    }else{
      N=1000*a+b;
    }
  //  System.out.println(N);
    System.out.println(isSq(N));
    
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int N = 0; N 0 if(b<10){
      N=10*a+b;
    }else if(10<=b&&b<100){
      N=100*a+b;
    }else{
      N=1000*a+b;
    } b<10 b 10 {
      N=10*a+b;
    } N=10*a+b N 10*a+b 10*a 10 a b if(10<=b&&b<100){
      N=100*a+b;
    }else{
      N=1000*a+b;
    } 10<=b&&b<100 10<=b 10 b b<100 b 100 {
      N=100*a+b;
    } N=100*a+b N 100*a+b 100*a 100 a b {
      N=1000*a+b;
    } N=1000*a+b N 1000*a+b 1000*a 1000 a b System.out.println(isSq(N)) System.out.println System.out System System.out isSq(N) isSq N String[] args args //引数が平方数なら"Yes",違うなら"No"を返すメソッド
  public static String isSq(int N){
   String res = "No";
    for(int i=1;i<=(int)Math.ceil(Math.sqrt(N));i++){
             // System.out.println(i);
      if(i*i==N){
        //System.out.println(i);
        res="Yes";
        return res;
      }
    }
    return res;
        
    
  } isSq {
   String res = "No";
    for(int i=1;i<=(int)Math.ceil(Math.sqrt(N));i++){
             // System.out.println(i);
      if(i*i==N){
        //System.out.println(i);
        res="Yes";
        return res;
      }
    }
    return res;
        
    
  } String res = "No"; res "No" for(int i=1;i<=(int)Math.ceil(Math.sqrt(N));i++){
             // System.out.println(i);
      if(i*i==N){
        //System.out.println(i);
        res="Yes";
        return res;
      }
    } int i=1; int i=1; i 1 i<=(int)Math.ceil(Math.sqrt(N)) i (int)Math.ceil(Math.sqrt(N)) Math.ceil Math Math.sqrt(N) Math.sqrt Math N i++ i++ i {
             // System.out.println(i);
      if(i*i==N){
        //System.out.println(i);
        res="Yes";
        return res;
      }
    } {
             // System.out.println(i);
      if(i*i==N){
        //System.out.println(i);
        res="Yes";
        return res;
      }
    } if(i*i==N){
        //System.out.println(i);
        res="Yes";
        return res;
      } i*i==N i*i i i N {
        //System.out.println(i);
        res="Yes";
        return res;
      } res="Yes" res "Yes" return res; res return res; res int N N public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int N = 0;
    if(b<10){
      N=10*a+b;
    }else if(10<=b&&b<100){
      N=100*a+b;
    }else{
      N=1000*a+b;
    }
  //  System.out.println(N);
    System.out.println(isSq(N));
    
  }
  
  //引数が平方数なら"Yes",違うなら"No"を返すメソッド
  public static String isSq(int N){
   String res = "No";
    for(int i=1;i<=(int)Math.ceil(Math.sqrt(N));i++){
             // System.out.println(i);
      if(i*i==N){
        //System.out.println(i);
        res="Yes";
        return res;
      }
    }
    return res;
        
    
  }
    
  

  
} public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int N = 0;
    if(b<10){
      N=10*a+b;
    }else if(10<=b&&b<100){
      N=100*a+b;
    }else{
      N=1000*a+b;
    }
  //  System.out.println(N);
    System.out.println(isSq(N));
    
  }
  
  //引数が平方数なら"Yes",違うなら"No"を返すメソッド
  public static String isSq(int N){
   String res = "No";
    for(int i=1;i<=(int)Math.ceil(Math.sqrt(N));i++){
             // System.out.println(i);
      if(i*i==N){
        //System.out.println(i);
        res="Yes";
        return res;
      }
    }
    return res;
        
    
  }
    
  

  
} Main
import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int N = 0;
    if(b<10){
      N=10*a+b;
    }else if(10<=b&&b<100){
      N=100*a+b;
    }else{
      N=1000*a+b;
    }
  //  System.out.println(N);
    System.out.println(isSq(N));
    
  }
  
  //引数が平方数なら"Yes",違うなら"No"を返すメソッド
  public static String isSq(int N){
   String res = "No";
    for(int i=1;i<=(int)Math.ceil(Math.sqrt(N));i++){
             // System.out.println(i);
      if(i*i==N){
        //System.out.println(i);
        res="Yes";
        return res;
      }
    }
    return res;
        
    
  }
    
  

  
}