```cpp
const int L=1<<16;
char buf[L],*S,*T;
inline char Gc(){
if(S==T){T=(S=buf)+fread(buf,1,L,stdin);
if(S==T) return EOF;}
return *S++;
}
inline int d(){
char c;int f=1,x;
for(c=Gc();c>'9'||c<'0';c=Gc())
if(c=='-') f=-1;
for(x=0;c>='0'&&c<='9';c=Gc())
x=(x<<1)+(x<<3)+c-'0';
return x*f;
}
```
by George1123 @ 2020-01-25 09:28:23
@[♗Wendigo♝](/user/118365) 那只能说明您的快读有问题
by yummy @ 2020-01-25 09:28:28
这是快读
by George1123 @ 2020-01-25 09:28:33
@[yummy](/user/101694) 过了几百题的快读有问题？
by George1123 @ 2020-01-25 09:28:59
蒟蒻瑟瑟发抖
by George1123 @ 2020-01-25 09:30:42
@[♗Wendigo♝](/user/118365) 不要怀疑一道通过 $2.83k$ 的题
by Lyr1c @ 2020-01-25 09:39:28
@[♗Wendigo♝](/user/118365) 怕不是混用了 fread 和 scanf/cin
```
```
by Zhou_JK @ 2020-01-25 09:46:28
你快读是不是输入字符有问题啊...
by pocafup @ 2020-01-25 09:47:38
@[Zhou_JK](/user/69519) 蒟蒻瑟瑟发抖
by George1123 @ 2020-01-25 09:56:28
有可能是快读与题目撞变量名了
还有就是定义但未使用的函数会对时间效率有影响
by WYXkk @ 2020-01-25 09:58:29