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Cod sursa(job #536537)
#include<stdio.h>
long sol[100],n,p;
void afis()
{
int i;
for(i=1;i<=n;i++)
printf("%ld ",sol[i]);
printf("\n");
}
int valid(int p)
{
int i;
for(i=1;i<p;i++)
if(sol[i]==sol[p])
return 0;
return 1;
}
void bkt(int p)
{
if(p==n+1)
{
afis();
return ;
}
int i;
for(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("%ld",&n);
bkt(1);
return 0;
}