package codeup_100;
import java.util.Scanner;
import java.util.StringTokenizer;
public class codeup_26 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String date = sc.nextLine();
StringTokenizer token = new StringTokenizer(date,":");
int [] arr = new int [3];
int i = 0;
while(token.hasMoreTokens()) {
arr[i]=Integer.parseInt(token.nextToken());
i=i+1;
}
System.out.printf("%d", arr[1]);
}
}