using System.Diagnostics.Metrics;
using System.Runtime.InteropServices;
using static 手写工厂模式.Program;namespace 手写工厂模式
{internal class Program{public interface eats {void eat();}//定义了一个接口public class rice : eats{public void eat() {Console.…
解法:
#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
int main() {int n, k;cin >> n;vector<int> arr(n);for (auto& x : arr) cin >> x;cin >> k;int sum 0;for (auto x : arr…