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Cod sursa(job #368517)
#include<fstream>
using namespace std;
int x[10],n;
ofstream fout("permutari.out");
void citire()
{
ifstream fin("permutari.in");
fin>>n;
fin.close();
}
void back(int k)
{
int i,pp,j;
for(i=1;i<=n;i++)
{
x[k]=i;
pp=1;
for(j=1;j<k&&pp;j++)
if(x[i]==x[k])
pp=0;
if(pp)
if(k==n)
{
for(j=1;j<=n;j++)
fout<<x[j]<<" ";
fout<<endl;
}
else
back(k+1);
}
}
int main()
{
citire();
back(1);
return 0;
}