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@@ -128,7 +128,7 @@ public:
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INLINE bool operator == (const ArcChain &other) const;
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INLINE bool operator != (const ArcChain &other) const;
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INLINE bool operator < (const ArcChain &other) const;
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- int compare_to(const ArcChain &other) const;
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+ INLINE int compare_to(const ArcChain &other) const;
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INLINE void output(ostream &out) const;
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