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擦，离散化+暴力，之前居然runtime error，把数组改大了就过了⊙﹏⊙b汗

Posted by zck921031 at 2012-05-05 09:19:05 on Problem 2528 
#include <cstdio>
#include <map>
#include <cstdlib>
#include <cstring>
using namespace std;
struct E
{
	int x,y;
}edge[20050];
map<int,int> l;//离散化
map<int,int>::iterator it;
int f[40050];//覆盖
int jmp[40050];//jump to the end of the line;

之前用的是【10050】，难道数据中n>10000？！！
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