#include <fstream>
std::ifstream fin("text.in");
std::ofstream fout("text.out");
int main()
{
    int count = 0, count1 = 0;
    char c;
    bool f = 0;
    while(!fin.eof())
    {
                     c = fin.get();
                     if((c>= 'A' && c<= 'Z') || (c>= 'a' && c<= 'z')) {f= 1;count++;}
                     else if(f == 1){f = 0;count1++;}
    }
    fout<<count/count1<<"\n";
    return 0;
}