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Cod sursa(job #310015)
#include<fstream>
#define L 300000
using namespace std;
fstream f("text.in",ios::in),g("text.out",ios::out);
char s[L];
long long lun,lit,zero,cuv;
int main()
{
long long i;
while(!f.eof())f.getline(s,L);
f.close();
for(i=0;i<L;i++)
{
if(s[i]=='\0')break;
}
lun=i;
for(i=0;i<lun;i++)
{
//if( (int)s[i] >=47 && (int)s[i] <= 58)lit++;
if( ( (int)(s[i])<97 || (int)(s[i])>122 ) && ( (int)(s[i])<65 || (int)(s[i])>90 ) ) s[i]='_';
else lit++;
}
for(i=0;i<lun;i++)
{
if(s[i]=='_')zero=0;
else
{
if(!zero)cuv++;
zero=1;
}
}
g<<lit/cuv;
g.close();
return 0;
}