public class Main{
public static void main(String[] args) {
int[] a = new int[4];
int k = 0;
int tem = 0;
int sum = 0;
for (int i = 1; i <= 100; i++) {
k = i * i * i;
while (k > 0) {
sum += k % 10;
k /= 10;
}
if(sum == i) {
tem++;
}
sum = 0;
}
System.out.println(tem);
}
}