public class Main4 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); Node[] node = new Node[n]; //表示关卡 for (int i = 0; i < n; i++) { int a = sc.nextInt(); int b = sc.nextInt(); node[i] = new Node(a,b); } Arrays.sort(node,(o1,o2)->o1.v==o2.v?o2.point-o1.point:o1.v-o2.v); int sum = 0; for (Node nd : node) { if(nd.v==0){ sum+=nd.point; }else{ if(sum+nd.point<2*sum){ //用宝物 sum*=2; }else sum+=nd.point; //不用宝物 } } System.out.println(sum); } } class Node{ int point; //分数 int v; //是否有宝物 public Node(int point,int v){ this.point = point; this.v = v; } } 第二题，我这个不知道对不对，自测了几个用例都可以过，最后时间不够没提交上去