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Cod sursa(job #395165)
#include<cstdio>
int n,k,sol[101];
int valid(int p)
{
for(int i=1;i<p;++i)
if(sol[i]>=sol[p])
return 0;
return 1;
}
void afisare()
{
for(int i=1;i<=k;++i)
printf("%d ",sol[i]);
printf("\n");
}
void bkt(int p)
{
if(p==k+1)
{
afisare();
return;
}
for(int i=1;i<=n;++i)
{
sol[p]=i;
if(valid(p))
bkt(p+1);
}
}
int main()
{
freopen("combinari.in","r",stdin);
freopen("combinari.out","w",stdout);
scanf("%d%d",&n,&k);
bkt(1);
return 0;
}