#include <cstdio>
#include <cstring>
using namespace std;

FILE *f=fopen ("text.in","r");
FILE *g=fopen ("text.out","w");

char s[100001];
int main(){
	int i,lg,lgcuv=0,cuv=0;
	bool reset=0;
	
	fgets (s,100001,f);
	lg=strlen(s);
	
	for (i=0;i<lg;++i){
		if ((s[i]<97 || s[i]>122) && (s[i]<65 || s[i]>90)){
			reset=1;
		}
		else{
			if (reset){
				cuv++;
				reset=0;
			}
			lgcuv++;
		}
	}
	fprintf (g,"%d",lgcuv/cuv);
	
	
	return 0;
}