求助！如何提高速度

[dingqiqi2009]

Mike is very lucky, as he has two beautiful numbers, 3 and 5. But he is so greedy that he wants infinite beautiful numbers. So he declares that any positive number which is dividable by 3 or 5 is beautiful number. Given you an integer N (1 <= N <= 100000), could you please tell mike the Nth beautiful number?

Input

The input consists of one or more test cases. For each test case, there is a single line containing an integer N.

Output

For each test case in the input, output the result on a line by itself.

Sample Input

1
2
3
4



Sample Output

3
5
6
9



小弟原代码　　　
#include"stdio.h"
main()
{
int n;
int i,j;
while(scanf("%d",&n)!=EOF)
{
j=0;
while(n)
{
j++;
if(j%3==0||j%5==0)
n--;
}
printf("%d\n",j);


}
}
　　

[WOBUGUAN]

很显然，大家都被你的英文吓跑了

[zhan1094]

变回中文，速度会加十倍

[neeestth]

汗，又没有什么难单词

[lwouyang]

#include"stdio.h"
int t[6]={15,3,5,6,9,10,12};
main()
{
int n;
while(scanf("%d",&n)!=EOF)
{
printf("%d\n",(n/6)*15 + t[n%6]);
}
}