Artifact 01a2602f05b036ac5c8770b88c89bf824f5222d4

• File _lib/typical/idGen.cpp
  • 2011-02-23 09:21:16 - part of checkin [4fd800b3a8] on branch trunk - Copied from private svn repository. (user: kinaba) [annotate]
• File lib/typical/idGen.cpp
  • 2011-02-23 11:18:09 - part of checkin [23dfcca431] on branch trunk - renamed _lib to lib (user: kinaba) [annotate]

//-------------------------------------------------------------
// ID Assignment
//
// Verified by
//   - ACM/ICPC Tokyo 2010 A
//   - SRM 491 Div1 LV3
//-------------------------------------------------------------

template<typename T>
class IdGen
{
	map<T, int> v2id_;
	vector<T>   id2v_;
public:
	int v2id(const T& v) {
		if( !v2id_.count(v) ) { v2id_[v] = size(); id2v_.push_back(v); }
		return v2id_[v];
	}
	const T& id2v(int i) const { return id2v_[i]; }
	int size() const { return id2v_.size(); }
};