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- #include <iostream>
- using namespace std;
- int st[100], n;
- void afisare(int k)
- {
- int i;
- for(i = 1; i <= k; i++)
- cout << st[i] << ' ';
- cout << endl;
- }
- int valid(int k)
- {
- for(int i = 1; i < k; i++)
- if(st[k] == st[i])
- return 0;
- return 1;
- }
- void back(int k)
- {
- int i;
- for(i = 1; i <= n; i++)
- {
- st[k] = i;
- if(valid(k))
- if(k == n)
- afisare(k);
- else back(k + 1);
- }
- }
- int main()
- {
- int k;
- cout << "n=";
- cin >> n;
- back(1);
- return 0;
- }
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