rover.cs

void Main()
{
	var m = new int[] { 0, 1, 0, -1, 0 };
	var inputs = @"5 5
1 2 N
LMLMLMLMM
3 3 E
MMRMMRMRRM".Split("\r\n".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
	for (int i = 1; i < inputs.Length; i += 2)
	{
		var start = inputs[i].Split(" ".ToCharArray());
		int x, y, o;
		if (start.Length != 3 || !int.TryParse(start[0], out x) || !int.TryParse((start[1]), out y) || (o = "NESW".IndexOf(start[2])) == -1) goto skip;
		foreach (var c in inputs[i+1])
			switch (c)
			{
				case 'L': o = --o & 3; break;
				case 'R': o = ++o & 3; break;
				case 'M': x += m[o]; y += m[o + 1]; break;
				default: goto skip;
			}
		Console.WriteLine($"{x} {y} {"NESW"[o]}");
		skip:;
	}
}