摘要:
祭学会fhq treap 下次有需要再补上 先存个模板 cpp // luogu judger enable o2 include using namespace std; const int N = 1e6 + 10; int root, n, a, x, y, z, op, Size, siz[ 阅读全文
摘要:
核心代码 Ploblem A Huffman Coding on Segment Alice wants to send an important message to Bob. Message $a=(a_1,...,a_n)$ is a sequence of positive integers 阅读全文