def counting_valleys(steps, path):
    count = level = 0
    in_valley = False
    for i in range(steps):
        level += 1 if path[i] == "U" else -1
        if level == -1 and path[i] == "D" and not in_valley:
            count += 1
            in_valley = True
        if level == 0 and path[i] == "U" and in_valley:
            in_valley = False
    return count