会场预约找一个最小的r加进集合12345678910111213141516171819202122232425262728293031323334353637383940414243444546#include <cstdio> #include <algorithm> …
洛谷P3144 [USACO16OPEN]关闭农场关闭农场离线的反着的并查集看看在不在一个集合内1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950#include< …