これを #define extrep(v,...) for(auto v:make_mat_impl({__VA_ARGS__})) vector<vector<long long>> make_mat_impl(vector<long long> v){ if(v.empty())return vector<vector<long long>>(1,vector<long long>()); long long n=v.back(); v.pop_back(); vector<vector<long long>> ret; vector<vector<long long>> tmp=make…</vector<long></vector<long></long></vector<long></long></vector<long>