import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        B solver = new B();
        solver.solve(1, in, out);
        out.close();
    }

    static class B {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            // 入力
            String a = in.next();
            String b = in.next();

            double tmp = Double.parseDouble(a + b);

            if (Math.sqrt(tmp) % 1 == 0) {
                out.println("Yes");
            } else {
                out.println("No");
            }

        }

    }
}
 import java.io.OutputStream; OutputStream java.io import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.io.PrintWriter; PrintWriter java.io import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        B solver = new B();
        solver.solve(1, in, out);
        out.close();
    }

    static class B {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            // 入力
            String a = in.next();
            String b = in.next();

            double tmp = Double.parseDouble(a + b);

            if (Math.sqrt(tmp) % 1 == 0) {
                out.println("Yes");
            } else {
                out.println("No");
            }

        }

    }
} Main public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        B solver = new B();
        solver.solve(1, in, out);
        out.close();
    } main {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        B solver = new B();
        solver.solve(1, in, out);
        out.close();
    } InputStream inputStream = System.in; inputStream System.in System System.in OutputStream outputStream = System.out; outputStream System.out System System.out Scanner in = new Scanner(inputStream); in new Scanner(inputStream) PrintWriter out = new PrintWriter(outputStream); out new PrintWriter(outputStream) B solver = new B(); solver new B() solver.solve(1, in, out) solver.solve solver 1 in out out.close() out.close out String[] args args static class B {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            // 入力
            String a = in.next();
            String b = in.next();

            double tmp = Double.parseDouble(a + b);

            if (Math.sqrt(tmp) % 1 == 0) {
                out.println("Yes");
            } else {
                out.println("No");
            }

        }

    } B public void solve(int testNumber, Scanner in, PrintWriter out) {
            // 入力
            String a = in.next();
            String b = in.next();

            double tmp = Double.parseDouble(a + b);

            if (Math.sqrt(tmp) % 1 == 0) {
                out.println("Yes");
            } else {
                out.println("No");
            }

        } solve {
            // 入力
            String a = in.next();
            String b = in.next();

            double tmp = Double.parseDouble(a + b);

            if (Math.sqrt(tmp) % 1 == 0) {
                out.println("Yes");
            } else {
                out.println("No");
            }

        } String a = in.next(); a in.next() in.next in String b = in.next(); b in.next() in.next in double tmp = Double.parseDouble(a + b); tmp Double.parseDouble(a + b) Double.parseDouble Double a + b a b if (Math.sqrt(tmp) % 1 == 0) {
                out.println("Yes");
            } else {
                out.println("No");
            } Math.sqrt(tmp) % 1 == 0 Math.sqrt(tmp) % 1 Math.sqrt(tmp) Math.sqrt Math tmp 1 0 {
                out.println("Yes");
            } out.println("Yes") out.println out "Yes" {
                out.println("No");
            } out.println("No") out.println out "No" int testNumber testNumber Scanner in in PrintWriter out out public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        B solver = new B();
        solver.solve(1, in, out);
        out.close();
    }

    static class B {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            // 入力
            String a = in.next();
            String b = in.next();

            double tmp = Double.parseDouble(a + b);

            if (Math.sqrt(tmp) % 1 == 0) {
                out.println("Yes");
            } else {
                out.println("No");
            }

        }

    }
} public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        B solver = new B();
        solver.solve(1, in, out);
        out.close();
    }

    static class B {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            // 入力
            String a = in.next();
            String b = in.next();

            double tmp = Double.parseDouble(a + b);

            if (Math.sqrt(tmp) % 1 == 0) {
                out.println("Yes");
            } else {
                out.println("No");
            }

        }

    }
} Main
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        B solver = new B();
        solver.solve(1, in, out);
        out.close();
    }

    static class B {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            // 入力
            String a = in.next();
            String b = in.next();

            double tmp = Double.parseDouble(a + b);

            if (Math.sqrt(tmp) % 1 == 0) {
                out.println("Yes");
            } else {
                out.println("No");
            }

        }

    }
}

