Hi, folks!

Can anyone give me the source code in C# of this task (mine is already AC) when the timing is less than 0.1 sec?
Or can anyone give me the key notes how it can be decreased in almost ten times?

Thanks in advance!

I presume your sol is O(NM), right?
Think a bit. There is O(N+M) solution which definitely has time better than 0.1 sec.

1) Be sure that your algorithm is O(N+M)
2) When calculating percents you should not do: value * 100 / number inside cycle,
it is better to calculate "100.0 / number" one time before cycle and then just perfom multiplying.
3) I used float for keeping values, not int. I think it saves time of casting from int to float.

When I used 2 and 3 my time for c# decreased from 0.109 to 0.046.