人间烟火zzcemt

#include <bits/stdc++.h> using i64 = long long; std::vector<int> stk(100000);//用数组模拟栈，特点是先进后出。 int

模板#include <bits/stdc++.h> using i64 = long long; int head = -1, idx = 0;//分别表示头节点的位置，当前这个点的位置。 st

思维 先化简，少使用除法--- highlight: monokai-sublime --- # 思维 ## 先化简，少使用除法 ``` #include <bits/stdc++.h> using

--- highlight: monokai-sublime --- # 思维 ``` #include <bits/stdc++.h> using i64 = long long; void s

--- highlight: monokai-sublime --- # 思维 ## 构造 x x-1 x-2 ... y+1 y y+1 ... x-1 ``` #include <bits/std

--- highlight: monokai-sublime --- # 思维：只有2才对题意有贡献 ``` #include <bits/stdc++.h> using i64 = long lo

--- highlight: monokai-sublime --- = 思维 + 平面几何 ``` #include <bits/stdc++.h> using i64 = long long;

= 思维 ``` #include <bits/stdc++.h> using i64 = lon

思维——构造 = ``` #include <bits/stdc++.h> using i64 =