# The function defines THREE parameters.
def maybeBuildSomething(typeToBuild, x, y):
    hero.moveXY(x, y)
    # Find the nearest enemy.
    enemy = hero.findNearestEnemy()
    if enemy:
        hero.buildXY(typeToBuild, x, y)
        
    # If there is an enemy
    
        # then use buildXY with typeToBuild, x, and y
        # Use the variable typeToBuild as a first argument.
        
    pass

# You don't need to change the code below.
while True:
    # Call maybeBuildSomething with "fire-trap" and the coordinates of the bottom X.
    maybeBuildSomething("fire-trap", 40, 20)
    # Call maybeBuildSomething, with "fence" at the left X!
    maybeBuildSomething("fence", 26, 34)
    # Call maybeBuildSomething with "fire-trap" at the top X!
    maybeBuildSomething("fire-trap", 40, 50)
    # Call maybeBuildSomething with "fence" at the right X!
    maybeBuildSomething("fence", 54, 34)
# Only build if you see an ene