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Cod sursa(job #497007)
#include <fstream.h>
int n,x[9],viz[9];
ifstream f("permutari.in");
ofstream g("permutari.out");
void tipar()
{int i;
for(i=1;i<=n;i++)
g<<x[i]<<" ";
g<<'\n';
}
void back(int k)
{int i;
for(i=1;i<=n;i++)
if(viz[i]==0)
{x[k]=i;
viz[i]=1;
if(k==n)
tipar();
else
back(k+1);
viz[i]=0;
}
}
int main(void)
{
f>>n;
back(1);
return 0;
}