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Cod sursa(job #664434)
#include<cstdio>
using namespace std;
int n,a[1000],sol[1000],i;
bool pus[1000];
void afis()
{
int i;
for (i=1;i<=n;i++)
printf("%d ",a[sol[i]]);
printf("\n");
}
void perm(int k)
{
int i;
if (k>n ) afis;
else
{
for (i=1;i<=n;i++)
if (!pus[i]) { sol[k]=i;
pus[i]=true;
perm(k+1);
pus[i]=false;
}
}
}
int main()
{
freopen("permutari.in","r",stdin);
freopen("permutari.out","w",stdout);
scanf("%d",&n);
for (i=1;i<=n;i++)
{
a[i]=i;
pus[i]=false;
}
perm(1);
return 0;
}