Computer Programming Contest Preparation

    1 #include <iostream>
    2 using namespace std;
    3 
    4 
    5 
    6 int main()
    7 {
    8     /* main */
    9     int a;
   10     int b;
   11 
   12     while (cin>>a>>b)
   13         {
   14             /* while */
   15             cout<<a;
   16             cout<<"\n";
   17         } /* while */
   18 } /* main */
   19