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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int list[8];
  6. void show(int index, int selected, int n, int m) {
  7. 	if(selected==m) {
  8. 		for(int i=0; i<m; i++) {
  9. 			cout<<list[i]<<" ";
  10. 		}
  11. 		cout<<'\n';
  12. 		return;
  13. 	}
  14.  
  15. 	if(index>n) return;
  16. 	list[selected]=index;
  17. 	show(index, selected+1, n, m);
  18. 	list[selected]=0;
  19. 	show(index+1, selected, n, m);
  20. }
  21.  
  22. int main() {
  23. 	int n,m;
  24. 	cin>>n>>m;
  25.  
  26. 	show(1, 0,n,m);
  27.  
  28. 	return 0;
  29. }
Success #stdin #stdout 0s 4372KB
comments (?)
stdin
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4 2
stdout
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1 1 
1 2 
1 3 
1 4 
2 2 
2 3 
2 4 
3 3 
3 4 
4 4
https://ideone.com/0qTsa0
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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