#include<string>
#include<cstdio>
#define in "text.in"
#define out "text.out"

int main()
{
    bool ok=0;
    freopen (in,"r",stdin);
    freopen (out,"w",stdout);

    char c;
    int l=0,cuv=0;
    while(scanf("%c",&c) && (c!='\n'))
    {
        if(isalpha(c))
        {
            ok=1;
            ++l;
        }
        else if(ok)
        {
            ok=0;
            ++cuv;
        }
    }
    printf("%d",l/cuv);
    return 0;
}