fstream get() function returns weird values

I am working on a maze solving algorithm. I input a text file formatted with 2 numbers at the top defining the width and height. Then a G for goal, S for start, # are walls, . are open spaces.

Example input:

3 3
..G
S##
#..

I have defined this function to make a data struture representation of the maze.

Cell** readFile(string filename, int& row, int& col) {
    fstream input;
    input.open(filename);

    string c;
    int x,y;

    getline(input, c, ' ');

    x = stoi(c);

    getline(input, c, '\n');
    y = stoi(c);

    Cell** maze = new Cell*[x];
    for (int i = 0; i < x; i++) {
        maze[i] = new Cell[y];
    }

    for(int i = 0; i < x; i++) {
        for(int j = 0; j < y; j++) {
            maze[i][j].x = i;
            maze[i][j].y = j;
            char ch = input.get();
            cout << ch << endl; //Important Line
            maze[i][j].symbol = ch;
        }
    }

    row = x;
    col = y;
    return maze;
}

This compiles but when I execute it I get the following output:
..G S## #

As you can see this has some spaces that shouldn't be there. As well as not including all of the symbols. Can someone explain this?

I've tried reviewing the fstream::get() documentation and looked at other similar problems. Ive tried using the eof() as well but that had no impact. I tried checking to see if input.get() fails as well but that returned the same output.