#include <stdio.h>
#include <string.h>
#include <ctype.h>

int main()
{
    FILE *fin = stdin;
    char str[10000];
    int counter = 0;

    fgets(str, 10000, fin);
    if(strlen(str) != 0 && isalpha(str[0]))
        counter++;


    for(int i = 0; i < strlen(str); i++)
    {
        if(str[i] == ' ' && isalpha(str[i + 1]))
        {
            while(str[i] == ' ')
                i++;
            counter++;
        }
    }

    printf("%d", counter);
}