#include <iostream>
#include <cstdio>
#include <cctype>
#include <string>
#include <fstream>
#include <string.h>

using namespace std;


char c, ca;

int litera(char c)
{
    if (c >='a' && c<='z')
        return 1;
    if (c >='A' && c<='Z')
        return 1;
    return 0;
}



int litere, cuv, i,;
int main()
{
    freopen("text.in","r",stdin);
    freopen("text.out","w",stdout);

    scanf("%c",&ca);
    if (litera(ca))
        cuv = 1;
    if (litera(ca))
        litere = 1;
    while (!f.eof())
    {
        scanf("%c",&c);
        if (litera(c))
            litere++;
        if (litera(c) && !litera(ca))
            cuv++;
        ca = c;
    }
    cout<<litere/cuv;
    cout<<"\n";

    return 0;
}