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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=1;i<=n;i++){
  8. for(int j=1;j<=n-i;j++){
  9. cout << " ";
  10. }
  11. for(int j=1;j<=i;j++){
  12. cout << j ;
  13. }
  14. cout << endl;
  15. }
  16. return 0;
  17. }
Success #stdin #stdout 0.01s 5324KB
stdin
5
stdout
    1
   12
  123
 1234
12345