submit B.cpp to 'B - ゲーム実況者Xのデフラグ' (rco-contest-2018-qual) [C++14 (GCC 5.4.1)]
submit B.cpp to 'B - ゲーム実況者Xのデフラグ' (rco-contest-2018-qual) [C++14 (GCC 5.4.1)]

kazunetakahashi/atcoder,kazunetakahashi/atcoder