OJ Board

In the sample output of 133,why there is only one space in front of 10?I think there should be two spaces here and my solution make two spaces but got a PE. Is there some one know why.Thank you.
Here is my code
#include <iostream>
#include <vector>
#include <list>

using namespace std;

int main ...

When solving problem 133, I tried every test case I can think out and the test case in the board.It's OK.But I always get Runtime error in submit.I want to know if there is some way that I can find the exact reason of the RTE,such as array overflaw. Does the judge provide such information?
I submit ...