LWER

摘要： #include <iostream>#include <stdio.h>#include <cstdlib>#include <string.h>#define MAX 50001using namespace std;int data[MAX];int sum;struct NODE { int lRange,rRange; int sum;}node[MAX<<4];void build(int root,int lRange,int rRange){ node[root].lRange = lRange; node[root] 阅读全文