#include <cstdio>

using namespace std;

inline bool check(char ch)
{
    return ((ch >= 'a' and ch <= 'z') or (ch >= 'A' and ch <= 'Z'));
}

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

    char ch,ant = '0';
    int l = 0,nr = 0;
    while(scanf("%c", &ch) != EOF)
    {
        if(check(ch))
        {
            l++;
            if(!check(ant))
                nr++;
        }
        ant = ch;
    }
    printf("%d", l / nr);
    return 0;
}