摘要:
#include struct Tree { Tree *lc,*rc; int l,r; int v,lazy; Tree(int l=0,int r=0) :l(l),r(r),v(0),lazy(0) {} void build() { if (l == r) return ; int ... 阅读全文
摘要:
#includeusing namespace std;const int M = 1e5+10 ;const double pi = acos(-1.0) ;int n ;double sx , sy ;//源点double X[M] , Y[M] ;double minn = 1e18 , ma... 阅读全文