快读与快输

inline int read(){
    int x=0,f=1;
    char ch=getchar();
    while(ch<'0'||ch>'9'){
        if(ch=='-')
            f=-1;
        ch=getchar();
    }
    while(ch>='0'&&ch<='9'){
        x=(x<<1)+(x<<3)+(ch^48);
        ch=getchar();
    }
    return x*f;
}

inline void write(int X)
{
    if(X<0) {X=~(X-1); putchar('-');}
    if(X>9) write(X/10);
    putchar(X%10+'0');
}