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Cod sursa(job #373174)
#include<cstdio>
#include<string>
const int N=1<<25;
char s[N];
int main()
{
freopen("text.in","r",stdin);
freopen("text.out","w",stdout);
gets(s);
long long n=strlen(s)-1,nrc=0,lg=0;
for (int i=0;i<=n;i++)
{
int x=(int)s[i];
if ((x>=65 && x<=90) || (x>=97 && x<=122))
{
lg++;
/*if (i==n-1)
nrc++;
else*/
//{
/*int y=(int)s[i-1];
if (y<65 || (y>90 && y<97) || y>123)
nrc++;*/
int y=(int)s[i+1];
if (y<65 || (y>90 && y<97) || y>123 || s[i+1]=='\0' || s[i+1]=='\n')
nrc++;
//}
}
}
printf("%lld",lg/nrc);
return 0;
}