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Cod sursa(job #813407)
#include <fstream>
using namespace std;
ifstream fin("permutari.in");
ofstream fout("permutari.out");
const int nmax= 8;
int n;
int v[nmax+1], u[nmax+1];
void back(int x){
if (x==n+1){
for (int i= 1; i<=n; ++i){
fout<<v[i]<<" ";
}
fout<<"\n";
}else{
for (int i= 1; i<=n; ++i){
if (!u[i]){
u[i]= 1;
v[x]= i;
back(x+1);
u[i]= 0;
}
}
}
}
int main(){
fin>>n;
back(1);
return 0;
}