PAT甲级1121 Damn Single (25分)|C++实现
PAT甲级1122 Hamiltonian Cycle (25分)|C++实现
（非原创）PAT甲级1123 Is It a Complete AVL Tree (30分)|C++实现
PAT甲级1124 Raffle for Weibo Followers (20分)|C++实现
PAT甲级1125 Chain the Ropes (25分)|C++实现
