zju2828漂亮数Beautiful Number

      总算对了一个，我的打击啊~

用时：0ms

#include
#define MAX 100000

int num[MAX];
int n;
int main()
{
    freopen("input.txt","r",stdin);
    freopen("output.txt","w",stdout);
    int i,j,k;
    num[1]=3;
    num[2]=5;
    j=2;
    k=2;
    for (i=3;i<=MAX;i++)
    {
        if(3*j        {
           num[i]=3*j;
           j++;
        }
        else if(3*j>k*5)
        {
           num[i]=5*k;
           k++;
        }
        else if(3*j==k*5)
        {
             num[i]=3*j;
             k++;
             j++;
        }
    }
    while(scanf("%d",&n)==1)
    {
       printf("%d/n",num[n]);
    }
    return 0;
}