CHOOSE FILE TO LOAD:  
After browsing the file, click on load button (Last button in the menu bar of edit area, looks like )

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Or if you want to write a programme instead of browsing file, please use below edit area to write your code

Language                              ProblemNo
C (gcc 4.3.2) C++ (g++ 4.3.2)                          1 2                    

HINTS

Hint Level 0 Hint Level 1 Hint Level 2 Hint Level 3 Hint Level 4 Highest Level Hint used: 0