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Cod sursa(job #847861)
#include <fstream>
using namespace std;
ifstream fin("permutari.in");
ofstream fout("permutari.out");
bool use[20];
int v[20];
void f(int n, int i)
{
int j;
if(i<=n)
{
for(j=1;j<=n;j++)
{
if(use[j]==0)
{
use[j]=true;
v[i]=j;
f(n,i+1);
use[j]=false;
}
}
}
else
{
for(j=1;j<=n;j++)
fout<<v[j]<<" ";
fout<<endl;
}
}
int main ()
{
int n;
fin>>n;
f(n,1);
}