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- t = open(r'F:\univer\прог\Множ.txt')
- n = int(t.readline())
- arr = t.readline().split()
- t.close()
- for i in range(n):
- arr[i] = int(arr[i])
- string = ""
- for i in range(pow(2,n)):
- string = ""
- for j in range(n):
- if (i & (1 << j)):
- string += str(arr[j])
- if string == "":
- print('{}')
- else:
- print('{', end = '')
- print(string, end = '')
- print('}')
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