message: Update contain-virus.cpp
diff: @@ -36,7 +36,8 @@ public:
  for (const auto& p : regions[i]) {
  grid[p.first][p.second] = -1;
  }
  - } else {
  + continue;
  + }
  for (const auto& p : regions[i]) {
  for (const auto& d : directions) {
  int nr = p.first + d.first;
  @@ -52,7 +53,6 @@ public:
  }
  }
  }
  - }
  return result;
  }
  