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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n;
  6. 	cin >> n;
  7. 	for(int i = 0; i < n; ++i) {
  8. 		for(int j = 0; j < n; ++j) {
  9. 			if(i <= j) {
  10. 				cout << j*(j+1)/2+1 + i;
  11. 			}
  12. 			cout << '\t';
  13. 		}
  14. 		cout << endl;
  15. 	}
  16. 	return 0;
  17. }
Success #stdin #stdout 0s 3460KB
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stdin
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6
stdout
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1	2	4	7	11	16	
	3	5	8	12	17	
		6	9	13	18	
			10	14	19	
				15	20	
					21
https://ideone.com/qxvVZk
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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