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#include <iostream> #include <vector> using namespace std; int n; int main() { cin >> n; int power = 1; for(int i = 1; i <= n; i++) { power *= 2; } int pows_of_two = 0; for(int i = 0; i < power; i++) { pows_of_two = 1; cout << "{"; for(int j = 0; j < n; j++) { if(i & pows_of_two) { cout << j + 1 << " " ; } pows_of_two *= 2; } cout << "}" << endl; } return 0; }
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