ACM第四题

题目链接：https://vjudge.net/problem/hdu-1000?tdsourcetag=s_pctim_aiomsg

#include <iostream>
using namespace std;
int main()
{
 int A, B;
 while (cin >> A >> B)
 {
  cout << A + B;
  cout << '\n';
 }
}