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Cod sursa(job #828996)
#include <fstream>
using namespace std;
ifstream fin("permutari.in");
ofstream fout("permutari.out");
int n, x[10], p[10];
void afis()
{
for(int i = 1; i <= n; i++)
fout << x[i] << " ";
fout << "\n";
}
void back(int k)
{
for(int i = 1; i <= n; i++)
if(!p[i])
{
x[k] = i; p[i] = 1;
if(k == n) afis();
else back(k + 1);
p[i] = 0;
}
}
int main()
{
fin >> n;
back(1);
fin.close();
fout.close();
return 0;
}