题解 | 【模板】完全背包

import java.util.Scanner;
import java.util.*;
// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNextInt()) {
            int a = in.nextInt();
            int b = in.nextInt();
            int[] val = new int[a];
            int[] weight = new int[a];
            for (int i = 0; i < a; i++) {
                val[i] = in.nextInt();
                weight[i] = in.nextInt();
            }
            int[] jiazhi = new int[b + 1];
            for (int i = 1; i <= b; i++) {
                for (int i1 = 0; i1 < val.length; i1++) {
                    if (i >= val[i1]) {
                        jiazhi[i] = Math.max(jiazhi[i], jiazhi[i - val[i1]] + weight[i1]);
                    }
                }
            }
            System.out.println(jiazhi[b]);

            Arrays.fill(jiazhi, Integer.MIN_VALUE);
            jiazhi[0] = 0;
            for (int i = 1; i <= b; i++) {
                for (int i1 = 0; i1 < val.length; i1++) {
                    if (i >= val[i1]) {
                        jiazhi[i] = Math.max(jiazhi[i], jiazhi[i - val[i1]] + weight[i1]);
                    }
                }
            }
            if (jiazhi[b] < 0) {
                jiazhi[b] = 0;
            }
            System.out.println(jiazhi[b]);
        }
    }
}