#include<stdio.h>
using namespace std;

int main()
{
		FILE *f=fopen("text.in","r"), *g=fopen("text.out","w");
		
		int cuvinte=0,ok=0,cuv=1;
		char c;
		
		while(c!='\n')
		{fscanf(f,"%c",&c);
		if(    (   ( (int) c < 65 )  ||  (  (int)c > 122 ) ) || ( ( (int) c < 97) || ( (int) c > 122 )  ) )
		{
			if(ok==1)
				cuvinte++;
			ok=0;
		}
		else {ok=1;cuv++;}		}


		
		fprintf(g,"%d\n",cuv/cuvinte);
		
	
	

fclose(f);
fclose(g);

return 0;}