摘要:
Problem DescriptionGive you a sequence of N(N≤100,000) integers : a1,...,an(0#include #include #include #include using namespace std;typedef long long... 阅读全文
摘要:
Problem DescriptionAn abandoned country has n(n≤100000) villages which are numbered from 1 to n. Since abandoned for a long time, the roads need to be... 阅读全文