import java.util.*;
public class Main {
public static void main(String[] args) {
for (int i = 1;i <= 256; i++) {
String str = String.valueOf(i * i);
String str2 = new StringBuffer(str).reverse().toString();
if (str.equals(str2)) {
System.out.println(i);
}
}
}
}
public class Main {
public static void main(String[] args) {
for (int i = 1;i <= 256; i++) {
String str = String.valueOf(i * i);
String str2 = new StringBuffer(str).reverse().toString();
if (str.equals(str2)) {
System.out.println(i);
}
}
}
}