program W
implicit none
integer::H(3)
read*,H
print"(A)",merge("A",merge("B","C",maxval(H)==H(2)),maxval(H)==H(1))
print"(A)",merge("A",merge("B","C",maxval(H)/=H(2).and.minval(H)/=H(2)),maxval(H)/=H(1).and.minval(H)/=H(1))
print"(A)",merge("A",merge("B","C",minval(H)==H(2)),minval(H)==H(1))
end program W