不是必须,也可以用输入输出优化啊,第九个点123ms
by Encounter @ 2017-08-02 16:45:39
就像这样:
```cpp
inline int read(){
int x=0,f=1;char ch=getchar();
while (!isdigit(ch)){if (ch=='-') f=-1;ch=getchar();}
while (isdigit(ch)){x=x*10+ch-48;ch=getchar();}
return x*f;
}
by 柠檬草苏打水 @ 2020-06-29 16:22:54