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Cod sursa(job #948528)
#include<cstdio>
using namespace std;
int v[10],n,m;
bool fol[10];
int max(int x,int y)
{
if(x>y)
return x;
else return y;
}
void afisare()
{
int i;
for(i=1;i<=m;i++)
{
printf("%d ",v[i]);
}
printf("\n");
}
void back(int k)
{
int i;
if(k==m+1)
{
afisare();
}
else
{
for(i=max(1,v[k-1]);i<=n;i++)
{
if(fol[i]==false)
{
fol[i]=true;
v[k]=i;
back(k+1);
fol[i]=false;
}
}
}
}
int main()
{
freopen("permutari.in","r",stdin);
freopen("permutari.out","w",stdout);
scanf("%d%d",&n,&m);
back(1);
}