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);
        TaskB solver = new TaskB();
        solver.solve(1, in, out);
        out.close();
    }

    static class TaskB {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String a = in.next();
            String b = in.next();
            int n = Integer.valueOf(a + b);

            for (int i = 0; i <= 330; i++) {
                if (n == i * i) {
                    out.print("Yes");
                    return;
                }
            }
            out.print("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);
        TaskB solver = new TaskB();
        solver.solve(1, in, out);
        out.close();
    }

    static class TaskB {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String a = in.next();
            String b = in.next();
            int n = Integer.valueOf(a + b);

            for (int i = 0; i <= 330; i++) {
                if (n == i * i) {
                    out.print("Yes");
                    return;
                }
            }
            out.print("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);
        TaskB solver = new TaskB();
        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);
        TaskB solver = new TaskB();
        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) TaskB solver = new TaskB(); solver new TaskB() solver.solve(1, in, out) solver.solve solver 1 in out out.close() out.close out String[] args args static class TaskB {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String a = in.next();
            String b = in.next();
            int n = Integer.valueOf(a + b);

            for (int i = 0; i <= 330; i++) {
                if (n == i * i) {
                    out.print("Yes");
                    return;
                }
            }
            out.print("No");
        }

    } TaskB public void solve(int testNumber, Scanner in, PrintWriter out) {
            String a = in.next();
            String b = in.next();
            int n = Integer.valueOf(a + b);

            for (int i = 0; i <= 330; i++) {
                if (n == i * i) {
                    out.print("Yes");
                    return;
                }
            }
            out.print("No");
        } solve {
            String a = in.next();
            String b = in.next();
            int n = Integer.valueOf(a + b);

            for (int i = 0; i <= 330; i++) {
                if (n == i * i) {
                    out.print("Yes");
                    return;
                }
            }
            out.print("No");
        } String a = in.next(); a in.next() in.next in String b = in.next(); b in.next() in.next in int n = Integer.valueOf(a + b); n Integer.valueOf(a + b) Integer.valueOf Integer a + b a b for (int i = 0; i <= 330; i++) {
                if (n == i * i) {
                    out.print("Yes");
                    return;
                }
            } int i = 0; int i = 0; i 0 i <= 330 i 330 i++ i++ i {
                if (n == i * i) {
                    out.print("Yes");
                    return;
                }
            } {
                if (n == i * i) {
                    out.print("Yes");
                    return;
                }
            } if (n == i * i) {
                    out.print("Yes");
                    return;
                } n == i * i n i * i i i {
                    out.print("Yes");
                    return;
                } out.print("Yes") out.print out "Yes" return; out.print("No") out.print 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);
        TaskB solver = new TaskB();
        solver.solve(1, in, out);
        out.close();
    }

    static class TaskB {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String a = in.next();
            String b = in.next();
            int n = Integer.valueOf(a + b);

            for (int i = 0; i <= 330; i++) {
                if (n == i * i) {
                    out.print("Yes");
                    return;
                }
            }
            out.print("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);
        TaskB solver = new TaskB();
        solver.solve(1, in, out);
        out.close();
    }

    static class TaskB {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String a = in.next();
            String b = in.next();
            int n = Integer.valueOf(a + b);

            for (int i = 0; i <= 330; i++) {
                if (n == i * i) {
                    out.print("Yes");
                    return;
                }
            }
            out.print("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);
        TaskB solver = new TaskB();
        solver.solve(1, in, out);
        out.close();
    }

    static class TaskB {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String a = in.next();
            String b = in.next();
            int n = Integer.valueOf(a + b);

            for (int i = 0; i <= 330; i++) {
                if (n == i * i) {
                    out.print("Yes");
                    return;
                }
            }
            out.print("No");
        }

    }
}

