SRC_D = d1_freq.cpp d2_dfs.cpp d3_closure.cpp d4_bfs.cpp
SRC_E = e1_unique.cpp e2_reflexive.cpp e3_normalize.cpp f1_mode.cpp f2_buckets.cpp f3_shortest.cpp g1_brackets.cpp g2_connected.cpp g3_dag.cpp g4_rel.cpp g5_numbers.cpp g6_bipartite.cpp
# d65f2ba3dace70819a57fc723a3cdc1cbcbae8b5  e1_unique.cpp
# 83153cb834c42a507abd58f8d320a50a8bcbb1a4  e2_reflexive.cpp
# bf55c4daa1d5781882da175a172f5eaf584d439a  e3_normalize.cpp
# bcbe0c10f41760991ecf90b8ecd6864e6fee4a22  f1_mode.cpp
# 30ba32ba79319995bcf215f878e51d3c8d9410a3  f2_buckets.cpp
# be1beda90126e498004032b9f3f3de06cf1af3b6  f3_shortest.cpp
# a2c0865d8192d1bc0252853baa1c75cf9bf48db5  g1_brackets.cpp
# c89a321174911dba8c27be397d8a5ddf4e4eeeca  g2_connected.cpp
# 29b9a757dc851e5cd1a27289061644d9b4bb21be  g3_dag.cpp
# 162322660c366e5b01860f0b40a15d6728862ddf  g4_rel.cpp
# 25a44a97adb7449dbfd97db0aae0cac0720f1ebe  g5_numbers.cpp
# b0e2a975da67b3e1f25a509bdb033617069ee47f  g6_bipartite.cpp