OpenJudge

6:Set Definition

总时间限制:
1000ms
内存限制:
65536kB
描述
Set S is defined as follows:
(1) 1 is in S;
(2) If x is in S, then 2x + 1 and 3x + 1 are also in S;
(3) No other element belongs to S.

Find the N-th element of set S, if we sort the elements in S by increasing order.
输入
Input will contain several test cases; each contains a single positive integer N (1 <= N <= 10000000), which has been described above.
输出
For each test case, output the corresponding element in S.
样例输入
100
254
样例输出
418
1461
来源
POJ Monthly--2005.08.28,Static
全局题号
1593
提交次数
32
尝试人数
12
通过人数
11