Phase 2 / dp, range-query
Phase 2 / dp, coloring, grid
Phase 6 / xor/subset_dp/weighted
Phase 5 / dp/set/nonoverlap
Phase 5 / dp/kth_path/grid
Phase 5 / dp, path counting
Phase 6 / tree/dp
Phase 6 / dp/greedy
Phase 6 / dp/tree
Phase 5 / dp, coloring, min cost
Phase 4 / dp, parity, combinatorics
Phase 5 / modulo, dp, multiset