肯定scanf printf 快（
by q779 @ 2021-02-25 22:14:36
感觉这个用户名有可能会让你被封禁
by 966123anyunchuan @ 2021-02-25 22:20:00
还有更快的：
```cpp
#include<cstdlib>
#include<cstring>
#include<cstdio>
#include<cctype>
namespace FastIo{
typedef unsigned long long ull;
typedef __uint128_t L;
static char buf[100000],*p1=buf,*p2=buf;
#define gc() p1==p2&&(p2=(p1=buf)+fread(buf,1,BUF_SIZE,stdin),p1==p2)?EOF:*p1++
#define pc(a) putchar(a)
class FastMod{
public:
FastMod(ull b):b(b),m(ull((L(1)<<64)/b)){}
ull reduce(ull a){
ull q=(ull)((L(m)*a)>>64);
ull r=a-q*b;
return r>=b?r-b:r;
}
private:
ull b,m;
};
FastMod HPOP(10);
class QIO{
public:
template<class T>inline void read(T &x){
x=0,ch=gc();
while(!isdigit(ch))ch=gc();
while(isdigit(ch)){x=(x<<3)+(x<<1)+(ch^48);ch=gc();}
}
template<class T> void write(T a){
if(a>9)write(a/10);
pc(HPOP.reduce(a)^48);
}
private:
char ch;
};
QIO qrw;
}
using namespace FastIo;
signed main(){
exit(0);
return 0;
}
```
by SHOJYS @ 2021-02-26 09:17:04
@[SHOJYS](/user/359147) /jk
by Union_of_Britain @ 2021-03-05 18:18:24