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template<typename V> struct OffsetVector { // Index should be in [minIndex, maxIndex]. // minIndex and maxIndex can be negative. OffsetVector(int minIndex, int maxIndex) { x.resize(maxIndex - minIndex + 1); offset = minIndex; } V& operator [] (int index) { return x[index - offset]; } auto begin() { return x.begin(); } auto end() { return x.end(); } auto size() { return x.size(); } private: std::vector<V> x; int offset; };
#line 1 "DataStructure/misc/offset_vector.h" template<typename V> struct OffsetVector { // Index should be in [minIndex, maxIndex]. // minIndex and maxIndex can be negative. OffsetVector(int minIndex, int maxIndex) { x.resize(maxIndex - minIndex + 1); offset = minIndex; } V& operator [] (int index) { return x[index - offset]; } auto begin() { return x.begin(); } auto end() { return x.end(); } auto size() { return x.size(); } private: std::vector<V> x; int offset; };