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Cod sursa(job #556396)
#include<fstream>
using namespace std;
ifstream f;
ofstream g;
int i,n,x[50];
void retsol()
{for(i=1;i<=n;i++)
g<<x[i]<<" ";
g<<endl;}
int continuare(int k)
{for(i=1;i<k;i++)
if(x[i]==x[k])
return 0;
return 1;}
void back()
{int k,s;
k=1;s=n;
while(k>0)
if(k==n+1)
{retsol();k--;}
else
if(x[k]<s)
{x[k]++;
if(continuare(k)==1)
k++;}
else
{x[k]=0;k--;}}
int main()
{f.open("Permutari.in");
g.open("Permutari.out");
f>>n;
back();
f.close();
g.close();}