a, b = map(int, input().split())
print(a / b)
n = int(input())
for i in range(1, 10):
    print(f'{n} * {i} = {n * i}')
test = int(input())
if test >= 90:
    print('A')
elif test >= 80:
    print('B')
elif test >= 70:
    print('C')
elif test >= 60:
    print('D')
else:
    print('F')

2e34c1f2b07b591ba2ae6edf2b0540b8e3c7a1fc
<mask token>

<mask token>
print(a / b)
<mask token>
for i in range(1, 10):
    print(f'{n} * {i} = {n * i}')
<mask token>
if test >= 90:
    print('A')
elif test >= 80:
    print('B')
elif test >= 70:
    print('C')
elif test >= 60:
    print('D')
else:
    print('F')

a, b = map(int, input().split())
print(a / b)
n = int(input())
for i in range(1, 10):
    print(f'{n} * {i} = {n * i}')
test = int(input())
if test >= 90:
    print('A')
elif test >= 80:
    print('B')
elif test >= 70:
    print('C')
elif test >= 60:
    print('D')
else:
    print('F')
