丧心病狂工科女

摘要： https://pintia.cn/problem-sets/994805342720868352/problems/994805362341822464 A supply chain is a network of retailers（零售商）, distributors（经销商）, and su 阅读全文

摘要： https://pintia.cn/problem-sets/994805342720868352/problems/994805363117768704 This time your job is to fill a sequence of N positive integers into a s 阅读全文