身材管理（三维背包）

Description

Input

Output

Sample

代码

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt(); // 输入n的值
        int money = scanner.nextInt();
        int v = scanner.nextInt();
        int price[] = new int[n];
        int capacity[] = new int[n];
        int happy[] = new int[n];
        for(int i =0;i<n;i++){
            price[i]=scanner.nextInt();
            capacity[i] = scanner.nextInt();
            happy[i] = scanner.nextInt();
        }
        System.out.println(calculate(price,capacity,happy,money,v));
    }
    public static int calculate(int price[],int cap[],int happy[],int allMoney,int capacity){
        int dp[][][] = new int[price.length+1][capacity+1][allMoney+1];
        int n = price.length;
        for(int i = 1;i<=n;i++)
            for(int money =1;money<=allMoney;money++)
                for(int c = 1;c<=capacity;c++){
                    if(cap[i-1]<=c&&price[i-1]<=money){
                        dp[i][c][money] = Math.max(dp[i-1][c-cap[i-1]][money-price[i-1]]+happy[i-1],dp[i-1][c][money]);
                    }else {
                        dp[i][c][money] = dp[i-1][c][money];
                    }
                }
        return dp[n][capacity][allMoney];
    }

}

思路

三维只是在二维上多了个嵌套的约束条件