#include <fstream>

using namespace std;

int main()
{
    ifstream in("text.in");
    ofstream out("text.out");
    int nrcuv = 0;
    int lncuv = 0;
    bool cuv = false;
    char lit;
    while (in>>noskipws>>lit) {
        if (isalpha(lit)) {
            lncuv++;
            if (!cuv) nrcuv++;
            cuv = true;
        } else
            cuv = false;

    }
    out<<lncuv/nrcuv;
    return 0;
}