Safe delete
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@ -42,6 +42,8 @@ using namespace std;
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#define ERR(x) std::cerr << "[error " << __FILE__ << ":" << __LINE__ << "] " << x << std::endl; exit(-1);
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#define WARN(x) std::cerr << "[warn " << __FILE__ << ":" << __LINE__ << "] " << x << std::endl;
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#define DELETE(x) { if(NULL != x) { delete x; x = NULL; } }
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typedef unsigned int NodeID;
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typedef unsigned int EdgeID;
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typedef unsigned int EdgeWeight;
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