OJ Board

I have WA with problem 101. I do not find test cases where my program
works wrong, maybe I misunderstand a point in the description . So I wonder if the judge could not tell whats wrong, either in the form of input or description as it happens when I get a compile error.

Hi,

The innermost for-loop is run 10^6 times, I think that is too much. Dynamic Programming, as mentioned before, sounds like a good
way to reduce time consumption.

Hi Olorin,
I got accepted now, so my feelin

From the problem description I guess Your 'lost'-condition is wrong.
A robot can not "drop off the world at the same grid point",
so it should be the field that matters, not the direction.
Hope that helps.