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Cod sursa(job #539787)
#include <stdio.h>
using namespace std;
int sol[9], viz[9], n;
void afisare()
{
for(int i=1; i<=n; i++)
printf("%d", sol[i]);
printf("\n");
}
void back(int k)
{
if(k==n+1)
{
afisare();
return;
}
for(int i=1; i<=n; i++)
if(!viz[i])
{
viz[i] = 1;
sol[k] = i;
back(k+1);
viz[i] = 0;
}
}
int main()
{
freopen("permutari.in", "r", stdin);
freopen("permutari.out", "w", stdout);
scanf("%d", &n);
back(1);
return 0;
}