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#include <iostream>
#include <string>
#include <fstream>
using namespace std;
int nrc, nrt, nt, verif;
string S;
bool verifyChar(char c)
{
return ((c>='a' && c<='z') || (c>='A' && c<='Z'));
}
int main()
{
ifstream f("text.in");
ofstream g("text.out");
getline(f,S);
for(int i=0; i<=S.size(); i++){
if(verifyChar(S[i])){
nrt++;
verif=0;
}
else
verif++;
if(verif==0 && nrt!=0)
nrc++;
}
if(nrc!=0)
nt=nrt / nrc;
g << nt;
return 0;
}