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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.   ios::sync_with_stdio(false);
  6.   cin.tie(nullptr);
  7.   cout.tie(nullptr);
  8.  
  9.   int n;
  10.   cin >> n;
  11.  
  12.   int cnt = 0;
  13.  
  14.   for (int i = 1; i <= n; ++i) {
  15.     cout << "i = " << i << ": ";
  16.  
  17.     for (int j = 1; j <= i; ++j) {
  18.       cout << "*";
  19.       cnt++;
  20.     }
  21.  
  22.     cout << " (j ran " << i << " times)\n";
  23.   }
  24.  
  25.   cout << "\nTotal iterations = " << cnt << " (O(n^2))\n";
  26.  
  27.   return 0;
  28. }
  29.  
Success #stdin #stdout 0.01s 5320KB
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stdin
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5
stdout
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i = 1: * (j ran 1 times)
i = 2: ** (j ran 2 times)
i = 3: *** (j ran 3 times)
i = 4: **** (j ran 4 times)
i = 5: ***** (j ran 5 times)

Total iterations = 15 (O(n^2))
https://ideone.com/Glxau2
language:
C++14 (gcc 8.3)
created:
7 days ago
visibility:
public

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