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Cod sursa(job #871967)
#include <fstream>
using namespace std;
ifstream fin("permutari.in");
ofstream fout("permutari.out");
int viz[10],n,i,j,pos,x,sol[10];
int back(int sol[10],int pos)
{int i;
if(pos==n+1)
{for(i=1;i<=n;i++)
fout<<sol[i]<<' ';
fout<<'\n';
}
else
{for(i=1;i<=n;i++)
if(viz[i]==0)
{viz[i]=1;
sol[pos]=i;
back(sol,pos+1);
viz[i]=0;
}
}
}
int main()
{fin>>n;
back(sol,1);
fin.close();
fout.close();
return 0;
}