package search;
import java.util.Scanner;
public class search {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int x = in.nextInt();
int result = -1;
int []s = {1,2,3,4,5,11,22,33,44,55};
for(int i=0;i<s.length;i++)
{
if(x==s[i]) {
result = i;
break;
}
}
if(result==-1)
{
System.out.println("查无此数");
}
else
{
System.out.println(x+"是"+"第"+result+"个数");
}
}
}
