using namespace std;

string getWord(string Line, int Position)
{
    stringstream ss(Line);
    vector<string> vec;
    string Word;
    while( ss >> Word )
        vec.push_back(Word);
    
    try {
	return vec.at(Position);
    } catch(out_of_range) {
	return "0";
    }
}

int toInt(string Number){
	std::istringstream i(Number);
	int x;
	if (!(i >> x))
		throw 0;
	
	return x;
}

float toFloat(string Number){
	std::istringstream i(Number);
	float x;
	if (!(i >> x))
		throw 0;
	
	return x;
}

class Terrain{
	private:
		int Width, Length;
		float **Heights;
	
	public:
		Terrain(const std::string &Path);
		~Terrain(void);
		int getWidth(void){ return Width; }
		int getLength(void){ return Length; }
		float getHeight(int x, int z){ return Heights[z][x]; }
		void setHeight(int x, int z, int y){ Heights[z][x] = y; }
		void Draw(void);
};

Terrain::Terrain(const string &Path){
	int Position = 0;
	ifstream File;
	string Line;
	File.open(Path.c_str(), ios::in);
	
	if(File.is_open()){
		while(!File.eof()){
			getline(File, Line);
			if(Position == 0){
				Width = toInt(getWord(Line, 0));
				Length = toInt(getWord(Line, 1));
				
				Heights = new float*[Length];
				for(int i = 0; i < Length; i++){
					Heights = new float[Width];
				}
				
			} else {
				for(int i = 0; i < Width; i++){
					Heights[Position - 1] = toFloat(getWord(Line, i));
				}
			}
			Position++;
		}
	}
}

Terrain::~Terrain(void){
	for(int i = 0; i < Length; i++){
		delete[] Heights;
	}
	delete[] Heights;
}