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();
        String s = a + String.valueOf(b);
        int val = Integer.valueOf(s);
        for (int i = 0; i < 1000; i++) {
            if (i * i == val) {
                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);
        int a = sc.nextInt();
        int b = sc.nextInt();
        String s = a + String.valueOf(b);
        int val = Integer.valueOf(s);
        for (int i = 0; i < 1000; i++) {
            if (i * i == val) {
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        String s = a + String.valueOf(b);
        int val = Integer.valueOf(s);
        for (int i = 0; i < 1000; i++) {
            if (i * i == val) {
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
    } main {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        String s = a + String.valueOf(b);
        int val = Integer.valueOf(s);
        for (int i = 0; i < 1000; i++) {
            if (i * i == val) {
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
    } 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 s = a + String.valueOf(b); s a + String.valueOf(b) a String.valueOf(b) String.valueOf String b int val = Integer.valueOf(s); val Integer.valueOf(s) Integer.valueOf Integer s for (int i = 0; i < 1000; i++) {
            if (i * i == val) {
                System.out.println("Yes");
                return;
            }
        } int i = 0; int i = 0; i 0 i < 1000 i 1000 i++ i++ i {
            if (i * i == val) {
                System.out.println("Yes");
                return;
            }
        } {
            if (i * i == val) {
                System.out.println("Yes");
                return;
            }
        } if (i * i == val) {
                System.out.println("Yes");
                return;
            } i * i == val i * i i i val {
                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);
        int a = sc.nextInt();
        int b = sc.nextInt();
        String s = a + String.valueOf(b);
        int val = Integer.valueOf(s);
        for (int i = 0; i < 1000; i++) {
            if (i * i == val) {
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        String s = a + String.valueOf(b);
        int val = Integer.valueOf(s);
        for (int i = 0; i < 1000; i++) {
            if (i * i == val) {
                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);
        int a = sc.nextInt();
        int b = sc.nextInt();
        String s = a + String.valueOf(b);
        int val = Integer.valueOf(s);
        for (int i = 0; i < 1000; i++) {
            if (i * i == val) {
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
    }
}
