#include<bits/stdc++.h>
using namespace std;
int main(){
int a[23218321339213];
string str;
while(cin>>str) cout<<"hello, "<<str<<"\n";
}
#include<bits/stdc++.h>
using namespace std;
int main(){
int a[23218321339213];
string str;
while(cin>>str) cout<<"hello, "<<str<<"\n";
}
sorry, the correct version is
#include<bits/stdc++.h>
using namespace std;
int main(){
int a[232183213392131111111111111111111111111111111111111111111111111];
string str;
while(cin>>str) cout<<"hello, "<<str<<"\n";
}