A,B=(float(i) for i in input(). split ())
if A==0.0 and B==0.0:
    print ("E")
elif A==0.0 or B==0.0:
    print ("S")
elif A==1.0 and B==1.0:
    print ("S")
elif A==1.0 or B==1.0:
    print ("E")
else:
    print ("P")