摘要:
割边裸题 #include<bits/stdc++.h> using namespace std; #define pi acos(-1) #define mod 80112002 #define ll long long #define ull unsigned long long #define 阅读全文
摘要:
https://ac.nowcoder.com/acm/contest/6046/C 二维线段树+区间异或+区间求和 1 #include <iostream> 2 #include <algorithm> 3 #include <cstring> 4 #include <cstdio> 5 usi 阅读全文