for i in range(int(input())):
a,b=input().split()
b=int(b)
K = ["A+","A","B+","B","C+","C","D+","D"]
L = [96,89,86,79,76,69,66,59]
for i,j in enumerate(L):
if b>j:
print(a,K[i])
break
else:
print(a,"F")