#include <iostream>
#include <string>
using namespace std;
int main() {
string s;
cin >> s;
for(int i = 0;i< s.size();i++){
if((s[i]>='a' && s[i]<='z') || (s[i]>='A' && s[i]<='Z') || s[i]=='-'){
cout << s[i];
}else{
// do nothing;
}
}
return 0;
}
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