func turnLeftIfNeeded() {
    for i in 1 ... 2 {
        if isBlocked {
            turnLeft()
        }
    }
}

func solveRightSide() {
    turnRight()
    for i in 1 ... 9 {
        if isOnGem {
            collectGem()
        }
        if i < 6 {
            turnLeftIfNeeded()
        } else if isBlocked {
            turnRight()
        }
        if i < 9 {
            moveForward()
        }
    }
}

func solveLeftSide() {
    turnLeft()
    for i in 1 ... 3 {
        if isOnClosedSwitch {
            toggleSwitch()
        } else if isOnGem {
            collectGem()
        }
        if i < 3 {
            turnLeftIfNeeded()
            moveForward()
        } else {
            turnLeft()
        }
    }
}

for i in 1 ... 5 {
    moveForward()
    if isOnGem {
        solveRightSide()
    } else if isOnClosedSwitch {
        solveLeftSide()
    }
}