#include<stdio.h>
#include<string.h>
#include<ctype.h>
long cuv,nrl,nrc,a,b,n,i,j;
FILE *f1,*f2;
char c;
int main(){
f1=fopen("text.in","r");
f2=fopen("text.out","w");
while(!feof(f1)){
	c=fgetc(f1);
	if(isalpha(c)){
		nrl++;
	}
	if(cuv){
		if(!isalpha(c)){
			cuv=0;
		}
	}
	else{
		if(isalpha(c)){
			nrc++;
			cuv=1;
		}
	}
}
fprintf(f2,"%ld",nrl/nrc);
return 0;
}