def f(x)
	case x
	when "R"
		return 0
	when "S"
		return 1
	when "P"
		return 2
	else
		return -1
	end
end
as=[[-1,0,1],[1,-1,0],[0,1,-1]]
sa,pa,xa=STDIN.gets.split(" ")
sb,pb,xb=STDIN.gets.split(" ")
sc=[sa,sb]

pa=pa.to_i
pb=pb.to_i

if pa==0 && pb==0
	puts -1
elsif pa>pb
	puts sa
elsif pa<pb
	puts sb
else
	t=as[f(xa)][f(xb)]
	if t==-1
		puts -1
	else
		puts sc[t]
	end
end