ZOJ2417&&HDU1196-Lowest Bit

Lowest Bit

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Time Limit: 2 Seconds      Memory Limit: 65536 KB

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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

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Author: SHI, Xiaohan
Source: Zhejiang University Local Contest 2005

题意：输出二进制最低位的1

解题思路：直接用lowbit

#include <iostream>#include <cstdio>#include <cstring>#include <cmath>#include <algorithm>#include <queue>#include <set>#include <stack>#include <map>#include <functional>#include <bitset>#include <string>using namespace std;#define LL long long#define INF 0x3f3f3f3fint main(){    int n;    while(~scanf("%d",&n)&&n)    {        printf("%d\n",n&(-n));    }    return 0;}