#include<fstream>
#include<string>
using namespace std;
 
int main()
{
    ifstream fin("text.in");
	ofstream fout("text.out");
    
	char a;
    unsigned long long nrc=0, nrl=0, k = 0;
     
    while(fin.get(a))
    {
       if(isalpha(a))
	   {
        nrl++;
		if(k == 0) 
			nrc++;
		k = 1;
	    } 
        else
        k = 0;			
	}
    int med;
    med = nrl / nrc;
	fout << med;
    
    return 0;
}