快读 快写

快读

  inline long read(){
      long x=0,t=1;
      char ch=getchar();
      while(ch<'0' || ch>'9'){
      if(ch='-') t=-1;
      ch=getchar();
     }
     while(ch>='0' && ch<='9'){
     x=(x<<1)+(x<<3)+(ch^48);
     ch=getchar();
     }
     return x*t;
}

快写

inline void write(long x){
    if(x<0) {
        x=-x;
        putchar('-');
    }
    if(x>0){
        write(x/10);
        putchar(x%10+'0');
    }
}