태그 2진수1 ad_hoc1 articulation1 Binary Search1 bipartite_matching1 boj4 case_work1 centroid1 coordinate_compression1 data_structures1 DEQUE1 DFS1 dfs1 DP2 geometry1 graphs2 mitm1 PS 일기4 pst1 Segment Tree2 segtree2 trees1 누적합2 디미고1 백준4 일기1