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Cod sursa(job #486341)
#include <stdio.h>
int n, sol [10];
void afisare ()
{
for( int i=1;i<=n; i++)
printf("%d ", sol [i]);
printf("\n");
}
bool valid (int p)
{
for( int i=1;i<p;++i)
if (sol[i]==sol[p])
return false;
return true;
}
void bkt(int p)
{
if(p==n+1)
{
afisare();
return;
}
for(int i=1;i<=n;i++)
{
sol[p]=i;
if(valid(p))
bkt(p+1);
}
}
int main ()
{
freopen("permutari.in","r",stdin);
freopen("permutari.out","w",stdout);
scanf("%d",&n);
bkt(1);
return 0;
}