#include <bits/stdc++.h>
using namespace std;
char x[10];

int main()
{
	int cnt = 0, len;
	char ch;

	cin.getline(x, 10);

	len = strlen(x);
	for (int i = 0; i < len; i++)
	{
		ch = x[i];
		if (ch != ' ')
			cnt++;
	}
	cout << cnt << endl;

	return 0;
}