int main()
{ 
     int A,B,C,i;
     int ans,bns,cns;
	 int Ans,Bns,Cns;
     for(A=1;A<4;A++)
        {
           for(B=1;B<4;B++)
             {if(B==A)
                 continue;
              C=6-B-A;
               ans=(B>A)+(C==A);
			  bns=(A>B)+(A>C);
			  cns=(C>B)+(B>A);
			  if((B+bns==3)&&(A+ans==3)&&(C+cns==3))
			  {Ans=A;
			  Bns=B;
			  Cns=C;
			  }
		   }
		   }
		   
		   
		  for(i=1;i<4;i++)
		  {
			  if(i==Ans)
				  cout<<"A";
			  else if(i==Bns)
				  cout<<"B";
			  else
				  cout<<"C";
		  }
		  return 0;
	 }