#include <stdio.h>
#include <string.h>
int main()
{
	char c,c1=' ';
	int result,nr=0,nrcuv=0;
	FILE* f=fopen("text.in","r");
	FILE* g=fopen("text.out","w");

	do {
		result=fscanf(f,"%c", &c);
		if (isalpha(c)){
			nr++;
			if (!isalpha(c1))
				nrcuv++;
		}
		c1=c;
	}while (result!=EOF);

	fprintf(g,"%d", nr/nrcuv);

	fclose(f);
	fclose(g);
	return 0;
}