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Cod sursa(job #171828)
#include<stdio.h>
int n,st[20],u[20];
void bkt(int l)
{
int i;
if(l-1==n)
{
for(i=1;i<=n;i++)
printf("%d ",st[i]);
printf("\n");
}
else
for(i=1;i<=n;i++)
if(!u[i])
{
st[l]=i;
u[i]=1;
bkt(l+1);
u[i]=0;
}
}
int main()
{
freopen("permutari.in","r",stdin);
freopen("permutari.out","w",stdout);
scanf("%d",&n);
bkt(1);
return 0;
}