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Cod sursa(job #585083)
#include <stdio.h>
int n,st[9],i,v[10];
int back(int k)
{
k++;
if (k==n+1)
{
for (i=1;i<=n;i++)
{
printf("%d ",st[i]);
}
printf("\n");
return 0;
}
for (st[k]=1;st[k]<=n;st[k]++)
{
if (v[st[k]]) continue;
v[st[k]]=1;
back(k);
v[st[k]]=0;
}
return 0;
}
int main(void)
{
freopen("permutari.in","r",stdin);
freopen("permutari.out","w",stdout);
scanf("%d",&n);
back(0);
return 0;
}