#include <iostream>
#include <vector>
using namespace std;
 
void print_prompt(const vector<vector<char>> & m, int x, int y) {
	std::cout << "You're currently at (" << x << ", " << y <<") = " << m[y][x] << std::endl;
	std::cout << "Enter a direction to travel (N, S, E, W):" << std::endl;
}
 
int main() {
	vector<vector<char>> matrix = {{'A', 'B', 'C', 'D'},
								   {'E', 'F', 'G', 'H'},
								   {'I', 'J', 'K', 'L'},
								   {'M', 'N', 'O', 'P'}};
	int x = 2, y = 2;
	char dir;
 
	print_prompt(matrix, x, y);
	while(std::cin >> dir)
	{
		switch(dir) {
			case 'N':
			case 'n':
				y = (y - 1) % matrix.size();
				break;
			case 'S':
			case 's':
				y = (y + 1) % matrix.size();
				break;
			case 'E':
			case 'e':
				x = (x + 1) % matrix[y].size();
				break;
			case 'W':
			case 'w':
				x = (x - 1) % matrix[y].size();
				break;
		}
		print_prompt(matrix, x, y);
	}
 
	return 0;
}

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TgpTCk4KTgpFCkUKVw==

N
S
N
N
E
E
W