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  1. #include <iostream>
  2. #include <cstring>
  3. using namespace std;
  4.  
  5. bool visited[25][25];
  6. int m[25][25];
  7. int M, N;
  8. int maxScore = 0;
  9.  
  10. void calculateScore(int x, int y, int color) {
  11.     if (x < 0 || y < 0 || x >= M || y >= N || visited[x][y] || m[x][y] != color) {
  12.         return;
  13.     }
  14.  
  15.     visited[x][y] = true;
  16.     maxScore++;
  17.  
  18.     calculateScore(x+1, y, color);
  19.     calculateScore(x-1, y, color);
  20.     calculateScore(x, y+1, color);
  21.     calculateScore(x, y-1, color);
  22. }
  23.  
  24. int main() {
  25.     memset(visited, false, sizeof(visited));
  26.     cin >> M >> N;
  27.  
  28.     for (int i = 0; i < M; i++) {
  29.         for (int j = 0; j < N; j++) {
  30.             cin >> m[i][j];
  31.         }
  32.     }
  33.  
  34.     int maxTotalScore = 0;
  35.  
  36.     for (int i = 0; i < M; i++) {
  37.         for (int j = 0; j < N; j++) {
  38.             memset(visited, false, sizeof(visited));
  39.             maxScore = 0;
  40.             calculateScore(i, j, m[i][j]);
  41.  
  42.             if (maxScore > 1) {
  43.                 int score = maxScore * (maxScore - 1);
  44.                 if (score > maxTotalScore) {
  45.                     maxTotalScore = score;
  46.                 }
  47.             }
  48.         }
  49.     }
  50.  
  51.     cout << maxTotalScore << endl;
  52.  
  53.     return 0;
  54. }
  55.  
Success #stdin #stdout 0.01s 5536KB
comments (?)
stdin 
4 7
1 1 1 1 1 1 1
2 5 5 5 2 2 2
3 5 5 1 5 5 1
3 3 5 5 1 5 1
stdout 
42
https://ideone.com/CZJvEO
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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