#include<string>
#include<fstream>
#include<cstring>
using namespace std;
 
int main(void)
{
    char a[100];
    int l=0,c=0,i;
	unsigned int len;
    ifstream f("text.in");
    f.get(a,100);
    f.close();
	len=strlen(a);
    for(i=0;i<len;i++)
    {
        if(isalpha(a[i]))
        {
            l++;
            if(!isalpha(a[i+1]))
                c++;
        }
    }
    ofstream g("text.out");
    g<<l/c;
    g.close();
    return 0;
}