标签：efi space clu printf tar scan highlight define pac
拆位分析一下就OK啦
/*
y + (y xor x)
*/
#include<bits/stdc++.h>
#define ll long long
using namespace std;
int n,k,ans=1;
int main(){
scanf("%d%d",&n,&k);
for(int i=0;i<=30;i++) if((1<<i)&n) ans<<=1;
for(int i=29;i>=0;i--) if(!((1<<i)&n)&&(1<<(i+1))<=k) k-=1<<(i+1);
printf("%d\n",k==0?ans:0);
return 0;
}
标签：efi space clu printf tar scan highlight define pac
原文地址：https://www.cnblogs.com/JYYHH/p/9940307.html
