#include <iostream>
#include <fstream>
#include<string.h>
using namespace std;

ifstream fin("text.in");
ofstream fout("text.out");

int main()
{
    char ch;
    int nrcuv=0, ltotal=0;
    bool cuv=false;
    while(ch!=EOF){
        ch=fin.get();
        if(isalpha(ch)){
            ltotal++;
            cuv=true;
        }
        else{
            if(cuv) nrcuv++;
            cuv=false;
        }
    }
    fout<<ltotal/nrcuv;
    return 0;
}