#include<iostream>
#include<cctype>
using namespace std;

int main()
{
    string s;
    while( getline( cin, s ) )
    {
        int num = 0;
        bool word = 0;
        for( int i = 0 ; i < s.length(); i++ )
        {
            if( isalpha( s[i] ) )
            {
                if( !word )
                {
                    word = 1;
                    num++;
                }
            }
            else
                word = 0;
        }
        cout << num << endl;
    }
    return 0;
}