include[HTML_REMOVED]

include[HTML_REMOVED]

include[HTML_REMOVED]

using namespace std;
int main(){
string s,s1,s2;
char c;
while(cin>>c,c!=’,’) s+=c;
while(cin>>c,c!=’,’) s1+=c;
while(cin>>c) s2+=c;
if(s.size()[HTML_REMOVED]=0){
int k=0;
while(k[HTML_REMOVED]=r) puts(“-1”);
else printf(“%d\n”,r-l-1);
}
return 0;
}