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Cod sursa(job #308120)
#include <stdio.h>
FILE *f=fopen("permutari.in","r");
FILE *g=fopen("permutari.out","w");
int st[9],n;
void init(int k)
{
st[k]++;
}
bool valid(int k)
{
for(int i=1;i<k;i++)
if(st[i]==st[k])
return false;
return true;
}
void type()
{
for(int i=1;i<=n;i++)
fprintf(g,"%d ",st[i]);
fprintf(g,"\n");
}
void back(int k)
{
if(k==n+1)
type();
else
for(int i=1;i<=n;i++)
{
st[k]=i;
if(valid(k))
back(k+1);
}
}
int main()
{
fscanf(f,"%d",&n);
back(1);
return 0;
}