hdu1032(水吗？)

http://acm.hdu.edu.cn/showproblem.php?pid=1032

#include"iostream"
using namespace std;
int i,j,Max=0;
int fun(int x,int y)
{

     for(i=x; i<=y; i++)
        {
             int count=1;
             int xx=i;
            while(xx!=1)
            {
              
                 if(xx%2!=0)  xx=3*xx+1; 
                     else   xx=xx/2; 
                      count++;
              
            }
              
               if(count>Max) Max=count;       
        }
       return Max;
}
int main()
{
        int N,M;
    while(scanf("%d %d",&N,&M)!=EOF)
    {
    
         Max=0;
        if(N>M)
        {
            int temp=N;
            N=M;
            M=temp;
            printf("%d %d %d\n",M, N,fun(N,M));
        }
        else  printf("%d %d %d\n",N,M,fun(N,M));
        
        
    }    
    return 0;
}