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