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  1. #include <iostream>
  2.  
  3. int main() {
  4.     int N;
  5.     std::cin >> N;
  6.  
  7.     // Print sequence from 1 to N
  8.     for (int i = 1; i <= N; ++i) {
  9.         std::cout << i << ' ';
  10.     }
  11.     std::cout << std::endl;
  12.  
  13.     // Print sequence from N to 1
  14.     for (int i = N; i >= 1; --i) {
  15.         std::cout << i << ' ';
  16.     }
  17.     std::cout << std::endl;
  18.  
  19.     return 0;
  20. }
Success #stdin #stdout 0.01s 5284KB
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9
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1 2 3 4 5 6 7 8 9 
9 8 7 6 5 4 3 2 1
https://ideone.com/nAPxO7
language:
C++ (gcc 8.3)
created:
6 days ago
visibility:
public

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