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

   // count words in the standard input stream, cin

int main()
{
    string word;
    int numWords = 0;                  // initially, no words

    while (cin >> word)                // read succeeded
    {   
        numWords++;
    }
    cout << "number of words read = " << numWords << endl;

    return 0;
}