import random

def calculate_orders(whoami, state):
    orders = []

    my_robots = state.robots_by_player[whoami]
    for rx, ry, energy in my_robots:
        if state[rx, ry].city == '+' and state[rx, ry].allegiance != whoami:
            orders.append('P')
            continue
        potential_orders = []
        if state[rx, ry].allegiance != whoami:
            potential_orders.append('P')
        if state[rx + 1, ry].city != 'X':
            potential_orders.append('R')
        if state[rx - 1, ry].city != 'X':
            potential_orders.append('L')
        if state[rx, ry + 1].city != 'X':
            potential_orders.append('D')
        if state[rx, ry - 1].city != 'X':
            potential_orders.append('U')

        if potential_orders:
            # Make a random move for each robot
            orders.append(random.choice(potential_orders))
        else:
            # There are no valid moves, so do nothing for this robot
            orders.append('-')

    return orders