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#include <fstream>
#include <ctype.h>
#include <string.h>
using namespace std;
ifstream in("text.in");
ofstream out("text.out");
int main()
{
char s[256];
int litere = 0, i, cuvinte = 0;
in.getline(s, 256);
for(i = 0; i < strlen(s); i++) {
if(isalpha(s[i])) {
litere++;
if(!isalpha(s[i+1])) cuvinte++;
}
}
out << litere / cuvinte;
return 0;
}