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Cod sursa(job #750616)
#include<fstream>
using namespace std;
int v[10],n;
ifstream fcin("permutari.in");
ofstream fcout("permutari.out");
void print()
{
for(int i=1;i<=n;i++)
fcout<<v[i]<<" ";
fcout<<"\n";
}
bool cont(int k)
{
for(int i=1;i<k;i++)
if(v[i]==v[k])
return 0;
return 1;
}
void back(int k)
{
if(k>n)
print();
for(int i=1;i<=n;i++)
{
v[k]=i;
if(cont(k))
back(k+1);
}
}
int main()
{
fcin>>n;
back(1);
return 0;
}