OJ Board

Thanks for your help.

I still got a lot of WA... I Don't know why....
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <algorithm>
#define MAX_NUM 10010
using namespace std;

struct POINT {
double x, y;
} point[ MAX_NUM ];

double distance( struct POINT *a, struct POINT *b )
{
double ...