求快读模板

#include<bits/stdc++.h>
#define R io.read
#define W io.write
using namespace std;
typedef long long ll;
struct IO
{
    char buf[1<<20],*p,*pp,obuf[1<<20],*q;
    IO():p(buf),pp(buf),q(obuf){}
    #define gc() (p==pp&&(pp=buf+fread(buf,1,1<<20,stdin),p=buf),p==pp?EOF:*p++)
    #define pc(c) (q==obuf+(1<<20)&&fwrite(obuf,1,1<<20,stdout),*q++=(c))
    ~IO(){if(q!=obuf)fwrite(obuf,1,q-obuf,stdout);}
    template<typename T>inline void read(T &x){x=0;char c=gc();bool f=0;while(c<'0'||c>'9')f|=(c=='-'),c=gc();while(c>='0'&&c<='9')x=x*10+(c^48),c=gc();if(f)x=-x;}
    template<typename T,typename...Args>inline void read(T &x,Args&...args){read(x);read(args...);}
    template<typename T>inline void write(T x){if(x<0)pc('-'),x=-x;if(x>9)write(x/10);pc(x%10+'0');}
    inline void write(char c){pc(c);}inline void write(const char *s){while(*s)pc(*s++);}
    template<typename T,typename...Args>inline void write(T x,Args...args){write(x);write(args...);}
}io;