ZOJ 2417 Lowest Bit

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发布时间：2022-11-20 14:50:14 306

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Given an positive integer A (1 <= A <= 100), output the lowest bit of A.

For example, given A = 26, we can write A in binary form as 11010, so the lowest bit of A is 10, so the output should be 2.

Another example goes like this: given A = 88, we can write A in binary form as 1011000, so the lowest bit of A is 1000, so the output should be 8.

Input

Each line of input contains only an integer A (1 <= A <= 100). A line containing "0" indicates the end of input, and this line is not a part of the input data.

Output

For each A in the input, output a line containing only its lowest bit.

Sample Input

26
88
0

Sample Output

2
8

输出二进制最低位的1，直接用lowbit就行了。

#include
#include
#include
#include
#include
#include
#include
using namespace std;
typedef long long LL;
#define rep(i,j,k) for (int i=j;i<=k;i++)
#define per(i,j,k) for (int i=j;i>=k;i--)
#define inone(x) scanf("%d",&x)
#define intwo(x,y) scanf("%d%d",&x,&y)
typedef pair<int,int> pii;
const int N=1e5+10;
const int mod=1e9+7;
int T, n;

int main()
{
    while(~inone(n)&&n)
    {
        printf("%d\n",n&-n);
    }
    return 0;
}

文章来源： https://blog.51cto.com/u_15870896/5839182

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