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Cod sursa(job #823232)
#include<stdio.h>
using namespace std;
int f(char c)
{
if(c>='a'&&c<='z')
return 1;
if(c>='A'&&c<='Z')
return 1;
return 0;
}
int main()
{
freopen("text.in","r",stdin);
freopen("text.out","w",stdout);
int g=0,nr=0,s=0;
char c;
while(scanf("%c",&c)==1)
{
if(f(c)==1)
{
nr++;
g=1;
}
else
if(g==1)
{
s++;
g=0;
}
}
if(g==1)
s++;
if(s==0)
printf("0\n");
else
printf("%d\n",nr/s);
return 0;
}