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Cod sursa(job #779477)
#include <fstream>
using namespace std;
ifstream f("permutari.in");
ofstream g("permutari.out");
int n,v[10],uz[10];
void perm(int p);
int main()
{
f>>n;
perm(1);
f.close();
g.close();
return 0;
}
void perm(int p){
int i;
if(p>n){
for(i=1;i<=n;i++)
g<<v[i]<<' ';
g<<'\n';}
else{
for(i=1;i<=n;i++){
if(!uz[i]){
uz[i]=1;
v[p]=i;
perm(p+1);
uz[i]=0;}}}}