输入输出挂

bool Finish_read;
template<class T>inline void read(T &x)
{
    Finish_read=0;
    x=0;
    int f=1;
    char ch=getchar();
    while(!isdigit(ch))
    {
        if(ch=='-')f=-1;
        if(ch==EOF)return;
        ch=getchar();
    }
    while(isdigit(ch))x=x*10+ch-'0',ch=getchar();
    x*=f;
    Finish_read=1;
}
template<class T>inline void print(T x)
{
    if(x/10!=0)print(x/10);
    putchar(x%10+'0');
}
template<class T>inline void writeln(T x)
{
    if(x<0)putchar('-');
    x=abs(x);
    print(x);
    putchar('
');
}
template<class T>inline void write(T x)
{
    if(x<0)putchar('-');
    x=abs(x);
    print(x);
}

贴的某个大佬的板子，还没用过，不知道好不好用。