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Cod sursa(job #319168)
#include <fstream>
using namespace std;
fstream f,g;
int n;
int st[9];
int uz[9];
int s;
void afis(int k)
{
for(int i=1;i<=k;i++)
g << st[i] << " ";
g << "\n";
}
void back(int k)
{
int i;
for(i=1;i<=n;i++)
if(!uz[i])
{
uz[i]=1;
st[k] = i;
if(n==k)
afis(k);
else
back(k+1);
uz[i]=0;
}
}
int main()
{
f.open("permutari.in",fstream::in);
g.open("permutari.out",fstream::out);
f >> n;
back(1);
g.close();
f.close();
return 0;
}