#include<cstdio>
using namespace std;
char c;
int lg,k;
int main()
{
    freopen("text.in","r",stdin);
    freopen("text.out","w",stdout);
    int ant=0;
    scanf("%c",&c);
    while(c!='\n')
    {
        if ((c>='a' && c<='z') || (c>='A' && c<='Z'))
        {
            if (ant==0)
            {
                ++lg;
                ant=1;
                ++k;
            }
            else ++lg;
        }
        else ant=0;
        scanf("%c",&c);
    }
    printf("%d\n",lg/k);
    return 0;
}