         self.tableData = (1...StageCreater.areaCount()).map { StageCreater.stages($0) }
         // 初期状態ではすべてのステージを「未選択」とします
         self.selectedData = self.tableData.map { (stages) in stages.map { _ in false } }
+        
+        self.showTotalCost()
     }
 
     override func viewWillAppear(animated: Bool) {

        if let indexPath = self.mainTableView.indexPathForCell(sender) {
            self.selectedData[indexPath.section][indexPath.row] = on
        }
    }
    
    private func updateTableViewCell(cell: StageSelectorCell, cellForRowAtIndexPath indexPath: NSIndexPath) {

        cell.cost = stage.cost
        cell.on = self.selectedData[indexPath.section][indexPath.row]
    }
    
    private func showTotalCost() {
        let totalCost = self.selectedData.enumerate().map { (areaIndex, ons) in
            ons.enumerate().map { (stageIndex, on) in on ? self.tableData[areaIndex][stageIndex].cost : 0 }
        }.flatten().reduce(0, combine: +)
        
        self.navigationItem.title = "合計 \(totalCost) GP"
    }
}

