#include <stdio.h>
#include <cstring>
#include <cctype>
using namespace std;
int main()
{
    freopen("text.in","r",stdin);
    freopen("text.out","w",stdout);
    char x;
    int i,k,c,s,kmax;
    k=c=s=0;
    while(scanf("%c ",&x)!=EOF)
         if(isalpha(x))
            {s++;
            if(k==0)
                kmax++;
            k=-1;
            }
        else k=0;
    printf("%d",s/kmax);
    return 0;
}