（一）确认应还款金额和还款结果
示例：nums = [2,1,2,4,3] → res = [4,2,4,-1,-1]。，更多细节参见safew官方版本下载
Владимир Путин и Дональд Трамп. Фото: Гавриил Григоров / РИА Новости，更多细节参见旺商聊官方下载
Additionally, in Canada, Bumble is testing Suggest a Date, a low-pressure way to signal that you're ready to take things off the app.