import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
 
class Main {
 
	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int num = 1;
		String ex = br.readLine();
		for (int i = 0; i < ex.length(); i++) {
			if (ex.charAt(i) == ' ') {
				if (i == 0 || i == ex.length() - 1) {
					continue;
				}
				num += 1;
			}
		}
		System.out.println(num);
 
	}
}

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