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				// Copyright (c) 2021 The Bitcoin developers
				// Distributed under the MIT software license, see the accompanying
				// file COPYING or http://www.opensource.org/licenses/mit-license.php.

				#ifndef BITCOIN_AVALANCHE_PROOFCOMPARATOR_H
				#define BITCOIN_AVALANCHE_PROOFCOMPARATOR_H

				#include <avalanche/proof.h>

				#include <cstdint>
				#include <memory>

				namespace avalanche {

				/**
				* Compare shared pointers to proof by score, then by id in case of equality.
				*/
				struct ProofSharedPointerComparator {
				bool operator()(const std::shared_ptr<Proof> &lhs,
				const std::shared_ptr<Proof> &rhs) const {
				uint32_t scoreLhs = lhs->getScore();
				uint32_t scoreRhs = rhs->getScore();

				return (scoreLhs != scoreRhs) ? scoreLhs > scoreRhs
				: lhs->getId() < rhs->getId();
				}
				};

				} // namespace avalanche

				#endif // BITCOIN_AVALANCHE_PROOFCOMPARATOR_H