21 lines
395 B
Python
21 lines
395 B
Python
import sys
|
|
from itertools import combinations
|
|
|
|
input = sys.stdin.readline
|
|
|
|
n = int(input())
|
|
arr = list(map(int, input().split()))
|
|
total = 0
|
|
|
|
translate_arr = [0] * n
|
|
|
|
for i in range(n):
|
|
translate_arr[i] = 1 / arr[i]
|
|
|
|
for i in range(1, n+1):
|
|
for j in combinations(translate_arr, i):
|
|
k = sum(j)
|
|
if(k>=0.99 and k<=1.01):
|
|
total+=1
|
|
|
|
print(total) |