#include<fstream>
#include<string.h>
using namespace std;
#define dim 1000000
char v[dim];
int main()
{
		//FILE *f=fopen("text.in","r"), *g=fopen("text.out","w");
	 ifstream f("text.in");     
     ofstream g("text.out");     
		int cuvinte=0,ok=0,cuv=1,i,a;
		//char c;
		f.get(v, dim, '\n');   
		
		
		i=1;
		while(v[i]!=0)
		{		
		if(    (   ( (int) v[i] < 65 )  ||  (  (int) v[i] > 122 ) ) || ( ( (int) v[i] < 97) || ( (int) v[i] > 122 )  ) )
		{
			if(ok==1)
				cuvinte++;
			ok=0;i++;
		}
		else {ok=1;cuv++;i++;}		}
	
	a=cuv/cuvinte;	
	g<<a<<"\n";
		
	//fprintf(g,"%d\n",cuv/cuvinte);
		
	
	

f.close();
g.close();

return 0;}