옮 길 것 을 기다리다 hdu_4430_전략 2 분 경전 But it’s a big challenge for them to place n candles on the top of the cake. To make the birthday cake look more beautiful, Ran and Chen decide to place them like r ≥ 1 concentric circles. They place ki candles equidista... 옮 길 것 을 기다리다데이터 구조이분삼 분
hdu_4430_전략 2 분 경전 But it’s a big challenge for them to place n candles on the top of the cake. To make the birthday cake look more beautiful, Ran and Chen decide to place them like r ≥ 1 concentric circles. They place ki candles equidista... 옮 길 것 을 기다리다데이터 구조이분삼 분