浙大acm1229

#include <iostream>
using namespace std;
int n,m;
int can;
int jump(int position, int direction,int times )
{
 if(times==2)
  can=0;
 if(can==1)
  return can;
 if(direction==1)
  position=position+times*2-1;
 if(direction==-1)
  position=position-times*2+1;
 if(position==m)
 {
  can=1;
  return can;
 }
 if(position>0&&position<=n)
 {
  jump(position,1,times+1);//向右
  jump(position,-1,times+1);  //向左
 }
  return can;
}
int main()
{
 
 while(cin>>n>>m)
 {
  
  if(n==0&&m==0)
   break;
  if(m==1)
  {
        cout<<"Let me try!"<<endl;
  continue;
  }
  int boyposition=1;
  int able=0;
  if(n>50)
   able=1;
  else
  {
  int time=2;
 
  able=jump(boyposition,1,time);//初始向右
  }
  if(able==1)
   cout<<"Let me try!"<<endl;
  else
   cout<<"Don't make fun of me!"<<endl;

 }
 return 0;
}