#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cstring>
#include<string>

using namespace std;

char s1[10000];
int ans, len;

int main()
{
	gets_s(s1);
	len = strlen(s1);
	for (int i = 0; i < len; i++)
	{
		if (s1[i] != ' ') ans++;
	}
	printf("%d", ans);
	return 0;
}