//..
// Goal:	The program will read a file and output 
//		the number of occurances of 'A'.

#include <iostream>

using namespace std;

int main()
{
	string name;	// holds the character read in
	int number = 0;	// # of "Jon"s 

	cin >> name; 	// priming read or read first
	while(cin)	// EOF-controlled loop
	{
		// proc
		if (name == "Jon")
			number ++;
		cin >> name;	// update read or read next
	}

	cout << "The # of Jon's - " << number << endl;

	return 0;
}