快读和快写

快读和快写

快读

    inline int read(){
       int s=0,w=1;
       char ch=getchar();
       while(ch<'0'||ch>'9'){if(ch=='-')w=-1;ch=getchar();}
       while(ch>='0'&&ch<='9') s=s*10+ch-'0',ch=getchar();
       return s*w;
    }

快写

void write(int x)  
{  
    int num = 0; char c[15];
    while(x) c[++num] = (x%10)+48, x /= 10;
    while(num) putchar(c[num--]);
    putchar('\n'); 
}