The Tour

1. Register an account freely.
2. Once you have an account, you can Login with it.
3. View Problems, and find one, for example the A+B
   problem.
4. You need to write a program to solve the problem.
   Here is a sample code in C++ language:

#include <iostream>
using namespace std;
int main() {
    int a, b;
    while (cin >> a >> b) {
        cout << a + b << endl;
    }
    return 0;
}

5. Copy the code to Submit Code, and Submit.
6. View the result at Realtime Status.