int strLen(char* str)
{
    int size = 0;

    for (int i = 0; str[i] != '\0'; i++)
    {
        size++;
    }

    return size;
}

long getWords(char str[])
{
    long count = 0;
    long strLength = strLen(str);

    if (strLength == 0)
        return -1;

    for (int i = 0; i <= strLen(str); i++)
    {
        if ((str[i] == ' ' || str[i] == '\t') && i == 0)
            continue;

        if ((str[i] == ' ' || str[i] == '\t' || str[i] == '\0') && str[i - 1] != ' ' && str[i - 1] != '\t')
        {
            count++;
        }
    }

    return count;

}

int main()
{
    char words[100]{ 0 };

    std::cin.getline(words, 100);

    std::cout << getWords(words);
}