import sys """ 评论区有些人用的数学做的,好强 递归:结果出现,在完全投入前及时止损,不需要完全遍历 """ def fun(sum_3, sum_5, nums_other): if len(nums_other) == 0: if sum_3 == sum_5: return True else: return False else: fun1 = fun(sum_3 + nums_other[0], sum_5, nums_other[1::]) fun2 = fun(sum_3, sum_5 + nums_other[0], nums_other[1::]) return fun1 or fun2 n = int(input()) nums = list(map(int, input().split())) nums_5 = [] nums_3 = [] nums_other = [] for i in nums: if i % 5 == 0: nums_5.append(i) elif i % 3 == 0: nums_3.append(i) else: nums_other.append(i) sum_3 = sum(nums_3[::]) sum_5 = sum(nums_5[::]) print('true') if fun(sum_3, sum_5, nums_other) else print('false')