Fix bugs and organize

algorithms/graph/centroid_decomposition.cpp

algorithms/paradigm/edit_distance.cpp

algorithms/paradigm/kadane.cpp

algorithms/paradigm/lis.cpp

algorithms/paradigm/ternary_search.cpp

algorithms/structure/disjoint_set.cpp

algorithms/structure/trie.cpp

contests/CodeJam/2018/Round 2/A.cpp

contests/CodeJam/2018/Round 2/a.out