Var A:integer;
Begin
Write('A = ');Read(A);
if A>50 then A:=(A div 10)+(A mod 10)
else A:=(A div 10)*(A mod 10);
Write(A);
End.
Var A,Min,N:integer;
Begin
Min:=30001;
Read(N);
For N:= 1 to N do
Begin
Read(A);
if (A mod 7 = 0)and(A < Min) then Min:=A;
End;
Write(Min)
End.