#include <iostream> #include <algorithm> using namespace std; const int MAXN = 1005; int n, m; int t[MAXN], f[MAXN]; int main() { cout << "请输入作业数和机器数" << endl; cin >> n >> m; cout << "请输入每个作业需要处理的时间" << endl; for (int i = 1; i <= n; i++) { cin >> t[i]; } sort(t + 1, t + n + 1); for (int i = 1; i <= n; i++) { int min_time = f[1]; int min_idx = 1; for (int j = 2; j <= m; j++) { if (f[j] < min_time) { min_time = f[j]; min_idx = j; } } f[min_idx] += t[i]; } int ans = f[1]; for (int i = 2; i <= m; i++) { ans = max(ans, f[i]); } cout <<"需要的时间为"<< ans << endl; return 0;流程图
时间: 2024-04-03 22:33:05 浏览: 96
抱歉,我无法显示流程图,但我可以解释一下这段代码的流程。
这是一个简单的作业调度问题,需要将n个作业分配给m个机器处理,每个作业需要处理一定的时间。代码首先输入n和m,然后输入每个作业需要处理的时间,并将它们按照从小到大的顺序排序。接着,使用贪心算法将每个作业分配给当前处理时间最短的机器,直到所有作业都被分配完。最后,输出所有机器中处理时间最长的那个机器的处理时间,即为需要的时间。
这段代码的时间复杂度为O(n*m*logn),其中logn是由于排序操作引起的。
相关问题
#include <iostream>#include <ctime>#include <cstdlib>using namespace std;const int MAXN = 500; // 需要排序的数组大小const int MAXV = 2000; // 随机数的最大值// 直接插入排序void insertSort(int a[], int
Sure, I can help you with that. The code you provided is written in C++ and it seems to be implementing the insertion sort algorithm. Insertion sort is a simple sorting algorithm that works by repeatedly inserting elements into a sorted portion of the array.
Here's the complete implementation of the insertion sort algorithm based on the code you provided:
```cpp
#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;
const int MAXN = 500; // Size of the array to be sorted
const int MAXV = 2000; // Maximum value for random numbers
// Function to generate random numbers
void generateRandomArray(int a[], int n) {
srand(time(0));
for (int i = 0; i < n; i++) {
a[i] = rand() % MAXV;
}
}
// Function to print the array
void printArray(int a[], int n) {
for (int i = 0; i < n; i++) {
cout << a[i] << " ";
}
cout << endl;
}
// Insertion sort implementation
void insertionSort(int a[], int n) {
for (int i = 1; i < n; i++) {
int key = a[i];
int j = i - 1;
while (j >= 0 && a[j] > key) {
a[j + 1] = a[j];
j--;
}
a[j + 1] = key;
}
}
int main() {
int arr[MAXN];
// Generate random array
generateRandomArray(arr, MAXN);
cout << "Original array: ";
printArray(arr, MAXN);
// Sort the array using insertion sort
insertionSort(arr, MAXN);
cout << "Sorted array: ";
printArray(arr, MAXN);
return 0;
}
```
This code generates a random array of size `MAXN` with values ranging from 0 to `MAXV`. It then sorts the array using the insertion sort algorithm and prints the original and sorted arrays.
Let me know if you have any further questions or if there's anything else I can assist you with!
#include<cstdio> #include<cstdlib> #include<cstring> #include<cmath> #include<ctime> #include<iostream> #include<algorithm> #include<map> #include<stack> #include<queue> #include<vector> #include<set> #include<string> #define dd double #define ll long long dd PI = acos(-1); using namespace std; const ll MAXN = 1e5 + 5; const ll INF = 1e9 + 5; ll n; struct node { ll x, y; }s[5000]; ll dp[MAXN] = { 0 }; int main() { //ios::sync_with_stdio(false); ll n, m; cin >> n >> m; for (ll i = 1; i <= n; i++) { cin >> s[i].x >> s[i].y; } for (ll i = 1; i <= n; i++) { for (ll j = m; j >= s[i].x; j--) { dp[j] = max(dp[j], dp[j - s[i].x] + s[i].y); } } cout << dp[m] << endl; }
这是一段动态规划求解背包问题的代码,用来求解一个容量为m的背包能够装下的最大价值。具体实现过程为:
1. 定义一个结构体node,用来存储物品的重量和价值。
2. 读入物品数量n和背包容量m,然后读入每个物品的重量和价值。
3. 使用二重循环,遍历每一个物品,然后从大到小枚举背包容量j,更新dp[j]的值,表示容量为j的背包能够装下的最大价值。
4. 最后输出dp[m]的值,即容量为m的背包能够装下的最大价值。
值得注意的是,这段代码中还定义了一些常量和宏定义,如MAXN、INF等,以及一些头文件和命名空间的使用。
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