hdu 位操作

高深的位运算有待学习

#include<iostream>#include<cstdio>using namespace std;void f(int &val,int index,int num){    if(num==0)        val&=~(1<<index);    else        val|=(1<<index);}int main(){    int r,x,y;    scanf("%x,%d,%d",&r,&x,&y);    f(r,x,0);    f(r,y,1);    f(r,y-1,1);    f(r,y-2,0);    printf("%x\n",r);    return 0;}