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Cod sursa(job #268397)
#include<stdio.h>
int x[20],n,k;
void readd(),back(int poz),afisare();
int main()
{
readd();
back(1);
return 0;
}
void readd()
{
freopen("combinari.in","r",stdin);
freopen("combinari.out","w",stdout);
scanf("%d%d",&n,&k);
}
void back(int poz)
{
int i;
if(poz==k+1){afisare();return;}
for(i=x[poz-1]+1;i<=n-k+poz;i++)
{x[poz]=i;back(poz+1);}
}
void afisare()
{
int i;
for(i=1;i<=k;i++);
printf("%d ",x[i]);
printf("\n");
}