import java.io.*;
class Main {
public static void main(String[] args) throws Exception {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String[] input = br.readLine().split(" ");
int count = 0;
for (int i = 0; i < input.length; i++) {
if (!input[i].equals("")) {
count++;
}
}
System.out.println(count);
}
}