#include <stdio.h>
#include <algorithm>
using namespace std;
using ll = long long;

//418
int main() {
	char s[101];
	scanf("%s", s);
	int p, c = 0;
	for (p = 0; s[p] != 0; ) {
		p += 2;
		while (s[p] == '-')
			p++;
		p += 1;
		c++;
	}
	printf("%d\n", c);
}