import java.util.HashSet;
class Main {
public static void main(String[] args) {
HashSet<Integer> set = new HashSet<>();
for (int i = 4; i < 500; i++) {
set.add(i*i%100);
}
System.out.println(set.size());
}
}
import java.util.HashSet;
class Main {
public static void main(String[] args) {
HashSet<Integer> set = new HashSet<>();
for (int i = 4; i < 500; i++) {
set.add(i*i%100);
}
System.out.println(set.size());
}
}