#53779: 限時答案!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
a = int(input())
if a <= 10:
print(a*6)
elif a <= 20:
print(60+(a-10)*2)
elif a <= 40:
print(80+(a-20*1))
else:
print(100)
a = int(input())
if a <= 10:
print(a*6)
elif a <= 20:
print(60+(a-10)*2)
elif a <= 40:
print(80+(a-20*1))
else:
print(100)