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- #include <bits/stdc++.h>
- using namespace std;
- int n;
- int main() {
- cout<<"n= ";
- cin >> n;
- for (int i = 1; i < (1 << n); i++)
- {
- for (int j = 0; j < n; j++)
- if (i & (1 << j))
- cout << j + 1 << ' ';
- cout << '\n';
- }
- return 0;
- }
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