submit D2.cpp to 'D - A Sequence of Permutations' (agc031) [C++14 (GCC 5.4.1)]
submit D2.cpp to 'D - A Sequence of Permutations' (agc031) [C++14 (GCC 5.4.1)]

kazunetakahashi/atcoder,kazunetakahashi/atcoder