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#include <iostream>
#include <fstream>
#include <string.h>
using namespace std;
ifstream f("text.in");
ofstream g("text.out");
int litera(char s)
{
if((s>='a' && s<='z') || (s>='A' && s<='Z'))
return 1;
else
return 0;
}
int main()
{
char s[256];
int k=0,nr_litere=0,nr_cuvinte=0,i;
f.get(s,256);
for(i=0;i<strlen(s);i++)
if(litera(s[i]))
{
nr_litere++;
k=1;
}
else
{
if(k)
nr_cuvinte++;
k=0;
}
if(k)
nr_cuvinte++;
g<<nr_litere/nr_cuvinte;
return 0;
}