SRM 344 Div2 Level 1

SRM 344 Div2 Level 1

class Chessboard
{
public:
  string changeNotation(string cell)
  {
    ostringstream oss;

    if(cell[0] >= 'a' && cell[0] <= 'h'){
      int c = static_cast<int>(cell[0]) - 'a' + 1;
      int n = static_cast<int>(cell[1]) - '1';
      oss << (n * 8 + c);
    }else{
      int n = strtol(cell.c_str(), NULL, 0);
      int l = (n - 1) / 8 + 1;
      char c = static_cast<char>(n - (l -1) * 8) + 'a' - 1;
      oss << c << l;
    }
    return oss.str();
  }
};