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Does anyone have a tricky input that would show me why I'm getting WA? I can't find any errors in my program, but apparently it's wrong. Thanks.

I'm getting WA, but I'm fairly confident my algorithm is right. Does anyone have test data which might help to detect problems in my program?

It just means that the two points will be opposite corners of the rectangle, but aren't necessarily the top left and bottom right points. All you have to do is add a couple if statements to make the points the top left and bottom right corners, or you can just leave them as they are because their ...

My program also took over 20 seconds for the problem, and I used the same DP that you did. Does anyone have an idea why it would take so long?

I can't find any errors with my code, but it's still getting WA. Are there any big errors?

@begin_of_source_code

/* @JUDGE_ID: 17030CW 191 C++ */

#include <stdio.h>
#include <stdlib.h>

struct point {
int x, y;
point(int a=0, int b=0) { x=a; y=b; }
};

int cross(point a, point b) {
return (a.x ...

What are we supposed to do in the case of a shot on the perimeter of the kingdom? I'm getting WA and I can't find a bug anywhere in my code unless the shot is on one of the edges or vertices, which really complicates things. Thanks.

Brian