#include <fstream>
#include<cstdio>
using namespace std;

int main()
{
    ifstream g("text.in");
    ofstream f("text.out");
    char ch;
    int len=0,cuv=0,k=0,m;
    while(g.get(ch))
    {
        if(((ch>='a') && (ch<='z'))||((ch>='A') && (ch<='Z')))
        {
            len++;
            if(k==0)cuv++;
            k=1;
        }
        else k=0;
    }
    m=len/cuv;
    f<<m;
    return 0;
}