@[DayLight_YC](/user/642434)
A1: cin 和 cout
A2: 6倍左右
by zhouzihang1 @ 2024-04-20 15:38:41
@[DayLight_YC](/user/642434) 关流快一点吧，当然快读快输当然最快了。
比如我用的：
```cpp
namespace Fast_IO
{
static char buf[1000000],*paa=buf,*pd=buf,out[10000000];int length=0;
#define getchar() paa==pd&&(pd=(paa=buf)+fread(buf,1,1000000,stdin),paa==pd)?EOF:*paa++
inline int read()
{
int x(0),t(1);char fc(getchar());
while(!isdigit(fc)){if(fc=='-') t=-1;fc=getchar();}
while(isdigit(fc)) x=(x<<1)+(x<<3)+(fc^48),fc=getchar();
return x*t;
}
inline void flush(){fwrite(out,1,length,stdout);length=0;}
inline void put(char c){if(length==9999999) flush();out[length++]=c;}
inline void put(string s){for(char c:s) put(c);}
inline void print(int x)
{
if(x<0) put('-'),x=-x;
if(x>9) print(x/10);
put(x%10+'0');
}
inline bool chk(char c) { return !(c>='a'&&c<='z'||c>='A'&&c<='Z'||c>='0'&&c<='9'); }
inline bool ck(char c) { return c!='\n'&&c!='\r'&&c!=-1&&c!=' '; }
inline void rd(char s[],int&n)
{
s[++n]=getchar();
while(chk(s[n])) s[n]=getchar();
while(ck(s[n])) s[++n]=getchar();
n--;
}
}
using namespace Fast_IO;
```
by Hoks @ 2024-04-20 15:54:07
@[zhouzihang1](/user/827018) @[Hoks](/user/551100) thx.
by DayLight_YC @ 2024-04-20 16:00:19