Blog说明
较新的博客中的代码会删除所有的省源，namespace，快读和宏定义等
CF 的题解有时会删去主程序
这里给出删除部分，由于本人模板的更新，不保证加上之后的代码可以通过
#include <cstdio>
#include <cmath>
#include <iostream>
#include <cstring>
#include <algorithm>
#include <queue>
#include <vector>
#include <map>
#include <unordered_map>
#include <set>
#include <bitset>
#include <stack>
#include <tuple>
#include <bitset>
#define ld long double
#define ll long long
#define ull unsigned long long
#define fp(a,b,c) for(ll a=b;a<=c;a++)
#define fd(a,b,c) for(ll a=b;a>=c;a--)
#define pii pair<int,int>
#define pll pair<ll,ll>
#define inf 0x3f3f3f3f
#define base 127
#define mod 1000000007
#define eb emplace_back
#define pb pop_back
using namespace std;
inline int rd(){
int x = 0, f = 1;char ch = getchar();
while(ch < '0' || ch > '9'){if(ch == '-')f = -1;ch = getchar();}
while(ch >= '0' && ch <= '9')x = (x<<1) + (x<<3) + (ch^48),ch = getchar();
return x * f;}
inline ll lrd(){
ll x = 0, f = 1;char ch = getchar();
while(ch < '0' || ch > '9'){if(ch == '-')f = -1;ch = getchar();}
while(ch >= '0' && ch <= '9')x = (x<<1) + (x<<3) + (ch^48),ch = getchar();
return x * f;}