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Cod sursa(job #787095)
#include<iostream>
#include<fstream>
using namespace std;
int n,use[10],v[10];
ofstream fout("permutari.out");
void out()
{
for(int i=1;i<=n;++i)
fout<<v[i]<<' ';
fout<<'\n';
}
void back(int p)
{
if(p>n)
{
out();
return;
}
for(int i=1;i<=n;++i)
if(use[i]==0)
{
use[i]=1;
v[p]=i;
back(p+1);
use[i]=0;
}
}
int main()
{
ifstream fin("permutari.in");
fin>>n;
back(1);
return 0;
}