But n <= 100000, n^2 <= 10^10, it's to slow!

• You said this not having made any attempt, didn't you? (48) frkstyc 2005-10-15 01:43:40
• If you find line a and line b intersect in a point, the line below can be ignore in later's search. So,much less than n^2. (48) piaoxing176 2005-10-15 01:45:53