set direction
segmentation fault
TLE
A-star was TLE
TLE (14.87s)
update A-star
I should give up bidirectional search(A-star)
change stage preserve way
solve 1339_Dragon\'s_Cruller
Merge branch 'feature-1339'
I should cope with order
solve 1307_Towns_along_a_Highway
Merge branch 'feature-1307'