import java.util.*;
import static java.lang.Math.*;
import java.math.BigInteger;

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		
		// 計算
		String result = "No";
		int c = Integer.valueOf(Integer.toString(a) + Integer.toString(b));
		for(int i = 0; i < c; i++){
		    if(i*i == c) result = "Yes";
		}
		
		// 出力
		System.out.println(result);
	}
}
 import java.util.*; util.* java import static java.lang.Math.*; import static java.lang.Math.*; import static java.lang.Math.*; import java.math.BigInteger; BigInteger java.math public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		
		// 計算
		String result = "No";
		int c = Integer.valueOf(Integer.toString(a) + Integer.toString(b));
		for(int i = 0; i < c; i++){
		    if(i*i == c) result = "Yes";
		}
		
		// 出力
		System.out.println(result);
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		
		// 計算
		String result = "No";
		int c = Integer.valueOf(Integer.toString(a) + Integer.toString(b));
		for(int i = 0; i < c; i++){
		    if(i*i == c) result = "Yes";
		}
		
		// 出力
		System.out.println(result);
	} main {
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		
		// 計算
		String result = "No";
		int c = Integer.valueOf(Integer.toString(a) + Integer.toString(b));
		for(int i = 0; i < c; i++){
		    if(i*i == c) result = "Yes";
		}
		
		// 出力
		System.out.println(result);
	} 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 String result = "No"; result "No" int c = Integer.valueOf(Integer.toString(a) + Integer.toString(b)); c Integer.valueOf(Integer.toString(a) + Integer.toString(b)) Integer.valueOf Integer Integer.toString(a) + Integer.toString(b) Integer.toString(a) Integer.toString Integer a Integer.toString(b) Integer.toString Integer b for(int i = 0; i < c; i++){
		    if(i*i == c) result = "Yes";
		} int i = 0; int i = 0; i 0 i < c i c i++ i++ i {
		    if(i*i == c) result = "Yes";
		} {
		    if(i*i == c) result = "Yes";
		} if(i*i == c) result = "Yes"; i*i == c i*i i i c result = "Yes" result "Yes" System.out.println(result) System.out.println System.out System System.out result String[] args args public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		
		// 計算
		String result = "No";
		int c = Integer.valueOf(Integer.toString(a) + Integer.toString(b));
		for(int i = 0; i < c; i++){
		    if(i*i == c) result = "Yes";
		}
		
		// 出力
		System.out.println(result);
	}
} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		
		// 計算
		String result = "No";
		int c = Integer.valueOf(Integer.toString(a) + Integer.toString(b));
		for(int i = 0; i < c; i++){
		    if(i*i == c) result = "Yes";
		}
		
		// 出力
		System.out.println(result);
	}
} Main
import java.util.*;
import static java.lang.Math.*;
import java.math.BigInteger;

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		
		// 計算
		String result = "No";
		int c = Integer.valueOf(Integer.toString(a) + Integer.toString(b));
		for(int i = 0; i < c; i++){
		    if(i*i == c) result = "Yes";
		}
		
		// 出力
		System.out.println(result);
	}
}

