#!/bin/python3

import math
import os
import random
import re
import sys


# Complete the countingValleys function below.
def countingValleys(s):
    level = 0
    valleys =0
    for x in s:
        if x == "U":
            level += 1
        else:
            level -= 1
        if level == 0 and x == "U":
             valleys += 1
    return valleys

def countWords(s):
    words = 1
    for x in s:
        if x == " ":
            words += 1
    print(words)

if __name__ == '__main__':
    s = input("Ingrese el texto: ")

    countWords(s)