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#include<iostream>
#include<fstream>
using namespace std;
int v[9],n;
ofstream fout("permutari.out");
void back(int i)
{
int s,j,ok;
for(j=1;j<=n;j++)
{
ok=1;
for(s=1;s<i;s++)
{
if(v[s]==j)
{
ok=0;
break;
}
}
if(ok==1)
{
v[i]=j;
if(i<n)
{
back(i+1);
}
else
{
for(s=1;s<=n;s++)
{
fout<<v[s]<<" ";
}
fout<<endl;
}
}
}
}
int main()
{
ifstream fin("permutari.in");
fin>>n;
back(1);
}