#include<fstream.h>
int litera(char c)
{
    if(c>='a'&&c<='z' || c>='A'&&c<='Z')return 1;
    return 0;
}
int main()
{
    ifstream f("text.in");
    ofstream g("text.out");
    char a,b,c;
    int lgt=0,nrc=0,nr;
    f.get(b);
    if(litera(b))lgt=1;
    while(f.get(c))
    {a=b;b=c;
     if(litera(c))lgt++;
     if(litera(a)&&!litera(b))nrc++;
    }
    if(litera(b))nrc++;
    nr=lgt/nrc;
    g<<nr<<'\n';
}