摘要: #include using namespace std; #define ll long long const ll maxn = 3e5+5; const ll mod = 1e9+7; ll n; ll a[maxn], b[maxn]; void fwt(ll *a) { for(ll d=1;d>= 1; } return res; } int main (... 阅读全文
posted @ 2018-08-23 14:30 楼主好菜啊 阅读(164) 评论(0) 推荐(0) 编辑