#include<cstdio>
#include<cctype>
#define filein "text.in"
#define fileout "text.out"
using namespace std;

int main()
{
	FILE *in,*out;
	in=fopen(filein,"r");
	out=fopen(fileout,"w");
	int n=0,cuv=0;
	char c;
	bool adv=false;
	while (fscanf(in,"%c",&c)!=EOF)
	{
		if (isalpha(c))
		{
			n++;
			if (!adv)
			{
				cuv++;
				adv=true;
			}
		}
		else adv=false;
	}
	fprintf(out,"%d",n/cuv);
	fclose(in);
	fclose(out);
	return 0;
}