a001. 哈囉 -- Brian Kernighan | From: [111.240.7.11] | 發表日期 : 2019-11-22 20:38

#include<iostream>
using namespace std; 
int main() {     
  string s;     
  while(cin >> s){          
    cout << "hello, "<< s << endl;     
  }      
}