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Cod sursa(job #644482)
#include<cstdio>
int n;
int sol[10];
bool valid[10];
void afisare()
{
for(int i=1;i<=n;i++)
printf("%d ",sol[i]);
printf("\n");
return;
}
void bkt(int p)
{
int i;
if(p==n+1)
{
afisare();
return ;
}
valid[sol[p-1]]=true;
for(i=1;i<=n;i++)
{
if(valid[i]==false)
{
sol[p]=i;
bkt(p+1);
}
}
valid[sol[p-1]]=false;
return ;
}
int main()
{
freopen("permutari.in","r",stdin);
freopen("permutari.out","w",stdout);
scanf("%d",&n);
bkt(1);
return 0;
}