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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. const int MAX_SIZE = 50;
  5.  
  6. int main() {
  7.     int mtSize, windLine[MAX_SIZE + 1][MAX_SIZE + 1];
  8.     cin >> mtSize;
  9.     for (int line = 1; line <= mtSize; ++line) {
  10.         for (int col = 1; col <= mtSize; ++col) {
  11.             cin >> windLine[line][col];
  12.         }
  13.     }
  14.     int lineDir = 0, colDir = 1;
  15. /*
  16. pop.ga.flaviu
  17. 2024-02-11 10:36:11
  18. Initialize 'lineDir' with the value of -1 and think how it could help you make your code shorter
  19. */
  20.     for (int linePos = 1, colPos = 1; linePos <= mtSize && colPos <= mtSize;) {
  21. /*
  22. pop.ga.flaviu
  23. 2024-02-11 10:35:24
  24. Instead of 'mtSize * mtSize' use 2 variables, i and j, and multiple conditions.
  25.  
  26. Also, declare the 'linePos' and 'colPos' in the for loop's condition
  27. */
  28.         cout << windLine[linePos][colPos] << " ";
  29.         int lPlusC = linePos + colPos;
  30.         if (lPlusC % 2 && ((lineDir == 0 && colDir == 1 && lPlusC <= mtSize + 1) 
  31. /*
  32. pop.ga.flaviu
  33. 2024-02-11 10:37:16
  34. Let's use only 1 if statement here to print the result, then 1 if-else if.
  35. */
  36.             || (lineDir == 1 && colDir == 0 && lPlusC >= mtSize + 1))) {
  37.             lineDir = 1;
  38.             colDir = -1;
  39.         }
  40.         if (lPlusC % 2 == 0 && ((lineDir == 0 && colDir == 1 
  41.             && lPlusC >= mtSize + 1) || (lineDir == 1 && colDir == 0 
  42.             && lPlusC <= mtSize + 1))) {
  43.             lineDir = -1;
  44.             colDir = 1;
  45.         }
  46.         if ((lineDir == 1 && colDir == -1 && lPlusC < mtSize + 1 && colPos == 1) 
  47.             ||  (lineDir == -1 && colDir == 1 && lPlusC >= mtSize + 1 
  48.             && colPos == mtSize)) {
  49.             lineDir = 1;
  50.             colDir = 0;
  51.         }
  52.         if ((lineDir == 1 && colDir == -1 && lPlusC >= mtSize + 1 
  53.             && linePos == mtSize) || (lineDir == -1 && colDir == 1 && 
  54.             lPlusC < mtSize + 1 && linePos == 1 )) {
  55.             lineDir = 0;
  56.             colDir = 1;
  57.         }
  58.         linePos += lineDir;
  59.         colPos += colDir;
  60.         lPlusC = linePos + colPos;
  61.     }
  62.     return 0;
  63. }
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/7ta51g
language:
C++14 (gcc 8.3)
created:
10 minutes ago
visibility:
public

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