#include <stdio.h>

char c;
int ok,i,nrc,nrl;

int main() {
	FILE *fin=fopen("text.in","r");
	FILE *fout=fopen("text.out","w");

	while (fscanf(fin,"%c",&c)!=EOF) {
		if ((c>='a' && c<='z')||(c>='A' && c<='Z')) {
			nrl++;
			if (ok==0)
				nrc++;
			ok=1;
		}
		else ok=0;
	}

	fprintf(fout,"%d",(nrl / nrc));

	fclose(fin);
	fclose(fout);
	return 0;
}