Devaka Cooray wrote:Please do not post questions from illegal sources.
i have no idea it is illegal or not i want its solution only thats why i am posting this
First, please Quote Your Sources. Then we can tell you whether the source is valid or not.
BTW... in looking over previous posts, it looks like you attempted to post this exact question before, and it was indeed from an invalid source (known cheating tool). Please don't post question from that source again.