hdoj_2546饭卡(强忍悲痛，好好写题解)

import java.util.Arrays;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        int n, m;
        int a[] = new int[5000];
        int dp[] = new int[5000];
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            n = sc.nextInt();
            if (n == 0)
                break;
            Arrays.fill(a, 0);
            Arrays.fill(dp, 0);
            for (int i = 0; i < n; i++) {
                a[i] = sc.nextInt();
            }
            Arrays.sort(a, 0, n);
            m = sc.nextInt();
            for (int i = 0; i < n - 1; i++)
                for (int j = m - 5; j >= a[i]; j--) {
                    dp[j] = Math.max(dp[j], dp[j - a[i]] + a[i]);
                }

            if (m < 5)
                System.out.println(m);
            else
                System.out.println(m - dp[m - 5] - a[n - 1]);
            
        }
    }

}

#include <iostream>
#include <algorithm>
#include <cstring>
#include <cstdio>
#include <cmath>
#include <cstdlib>
using namespace std;
    int a[10000];
    int dp[10000];
int main(){
    int n,m;

    while(cin>>n&&n){
    memset(a,0,sizeof(a));
    memset(dp,0,sizeof(dp));
    for(int i = 0;i<n;i++){
        cin>>a[i];
    }
    cin>>m;
    sort(a,a+n);

    for(int i=0;i<n-1;i++){
         for(int k=m-5;k>=a[i];k--){
             dp[k]=max(dp[k],dp[k-a[i]]+a[i]);
         }
    }
    
    if(m<5)
        cout<<m<<endl;
    else
        cout<<m-dp[m-5]-a[n-1]<<endl;
    }
    return 0;
}