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Graph TheoryChallengeEulerian and Hamiltonian Graphs

Eulerian and Hamiltonian Graphs · Challenge problem

Five cities 0,1,2,3,40,1,2,3,4 have direct roads of lengths 01:401{:}4, 02:902{:}9, 03:703{:}7, 04:304{:}3, 12:512{:}5, 13:613{:}6, 14:814{:}8, 23:223{:}2, 24:624{:}6, 34:534{:}5 (every pair is linked). A salesperson starting at city 00 must visit every other city exactly once and return to city 00. What is the minimum possible total distance?