yo_haha的专栏

http://acm.hdu.edu.cn/showproblem.php?pid=1166 线段树模板题#include <cstdio> using namespace std; #define lson l,m,rt<<1 #define rson m+1,r,rt<<1|1 const int maxx=55555; int sum[maxx<<2]; void PushUp(int rt

http://acm.hdu.edu.cn/showproblem.php?pid=1754#include <cstdio> using namespace std; const int maxx=200000; int sum[maxx<<2]; #define lson l,m,rt<<1 #define rson m+1,r,rt<<1|1 int MAX(int a, int b) {

http://acm.hdu.edu.cn/showproblem.php?pid=1394#include <cstdio> using namespace std; const int maxx=5100; int sum[maxx<<2]; #define lson l,m,rt<<1 #define rson m+1,r,rt<<1|1 void pushup(int rt) { s