소스 코드 제출

'''
M=0
for x in range(0, 5):
    (a, aa) = map(float, input().split())
    if 5>(aa-a)>1:
        M+=((aa-a)*10000-10000)
    elif (aa-a)>=5:
        M+=40000
    else:
        M+=0
if M>=15:
    M=M*(95/100)
elif M<=5:
    M=M*(105/100)
print(int(M*10000))

'''


# n1=list(input())
# n2=n1
# n1.reverse()
# n1 = "".join(n1)
# n2.reverse()
# n2 = "".join(n2)
# k=int(n1)+int(n2)
# k=f'{k}'
# k=list(k)
# l=int(len(k))
# if len(k) % 2 == 0:
#     for x in range(0,int(l/2)):
#         if k[0+x]==k[l-x-1]:
#             pass
#         else:
#             print('NO')
#             break
#         if (x+1) == (l/2):
#             print('YES')
# else:
#     for x in range(0,int((l-1)/2)):
#         if k[0+x]==k[l-x-1]:
#             pass
#         else:
#             print('NO')
#             break
#         if x == (l-1)/2-1:
#             print('YES')


# st=input()
# st=list(st)
# st.reverse()
# st = "".join(st)
# print(st)

# (A, B)=input().split('x')
# A=int(A)
# B=int(B)
# O=-B/A
# print("%.2f"%O)
# print("{:.2f}".format(O))