2025-02-14

# import time
#
# a = ['영', '일', '이', '삼', '사', '오', '육', '칠', '팔', '구']
# units = ['', '십', '백', '천', '만', '억', '조', '경', '해']
#
#
# def f(n):
#     if n == 0:
#         return a[0]
#
#     result = ""
#     unit_idx = 0
#
#     while n > 0:
#         num = n % 10
#         if num > 0:
#             result = a[num] + (units[unit_idx] if num != 1 or unit_idx == 0 else "") + result
#         n = n // 10
#         unit_idx += 1
#
#     return result
#
#
# cnt = 0
# while True:
#     print(f"{f(cnt)}현우")
#     time.sleep(1/16)
#     cnt += 1

# H, I, A, R, C = map(int, input().split())
# print((H*I)-(A*R*C))

# a = int(input())
# b = int(input())
# if a > 10:
#     a = a-24
#
# if a-b < 0:
#     print(b-a)
# else :
#     print(a-b)

# a, b, c = map(int, input().split())
# if a == b == c:
#     print('*')
# elif a == b:
#     print('C')
# elif b == c:
#     print('A')
# else:
#     print('B')

a = int(input())
b = int(input())
if a <= 60:
    print((a+b)*1500)
else:
    a = a-(60+b)
    print(((60 + b)*1500)+(a*3000))