import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int H = scanner.nextInt(); // Rows
        int W = scanner.nextInt(); // Columns

        char[][] grid = new char[H + 1][W + 1]; // +1 because we are using 1-based indexing

        // Read the grid input
        for (int i = 1; i <= H; i++) {
            String line = scanner.next();
            for (int j = 1; j <= W; j++) {
                grid[i][j] = line.charAt(j - 1);
            }
        }

        boolean[][] visited = new boolean[H + 1][W + 1]; // Track visited cells
        int i = 1, j = 1;

        // Movement logic
        while (true) {
            if (visited[i][j]) {
                // If we've visited the cell before, we're in a loop
                System.out.println(-1);
                scanner.close();
                return;
            }
            visited[i][j] = true;

            // Perform the move according to the character
            switch (grid[i][j]) {
                case 'U':
                    if (i == 1) {
                        printPosition(i, j);
                        return;
                    }
                    i--;
                    break;
                case 'D':
                    if (i == H) {
                        printPosition(i, j);
                        return;
                    }
                    i++;
                    break;
                case 'L':
                    if (j == 1) {
                        printPosition(i, j);
                        return;
                    }
                    j--;
                    break;
                case 'R':
                    if (j == W) {
                        printPosition(i, j);
                        return;
                    }
                    j++;
                    break;
                default:
                    printPosition(i, j);
                    return;
            }
        }
    }

    private static void printPosition(int i, int j) {
        System.out.println(i + " " + j);
    }
}