批处理调度C语言

#include<stdio.h>
#include<stdlib.h>
#include<string.h> 
int *x;
int **M;
int *best;
int *f2;
int f1;
int f;
int bestf;
int n;

void init() {
	f = 0;
	f1 = 0;
	bestf = INT_MAX;
	printf("请输入作业数");
	scanf("%d", &n);
	x = (int*)malloc(sizeof(int) * (n + 1));
	best = (int*)malloc(sizeof(int) * (n + 1));
	f2 = (int*)malloc(sizeof(int) * (n + 1));
	M = (int**)malloc(sizeof(int*) * (n + 1));
	for (int i = 1; i <= n; ++i) {
		M[i] = (int*)malloc(sizeof(int) * 3);
	}
	for (int i = 1; i <= n; ++i) {
		printf("请输入%d个作业机器一处理的时间", i);
		scanf("%d", &M[i][1]);
		printf("请输入%d个作业机器二处理的时间", i);
		scanf("%d", &M[i][2]); 
	}
	for (int i = 1; i <= n; ++i) {
		x[i] = i;
	}
	f2[0] = 0;
} 

void backtrack(int i) {
	if (i > n) {
		bestf = f;
		memcpy(best + 1, x + 1, sizeof(int) * n);
		return; 
	}
	for (int j = i; j <= n; ++j) {
		f1 += M[x[j]][1];
		f2[i] = (f2[i - 1] > f1 ? f2[i - 1] : f1) + M[x[j]][2];
		f += f2[i];
		if (f < bestf) {
			int temp;
			temp = x[i];
			x[i] = x[j];
			x[j] = temp;
			backtrack(i + 1);
			temp = x[i];
			x[i] = x[j];
			x[j] = temp;
		}
		f1 -= M[x[j]][1];
		f -= f2[i];
	}
}

void show() {
	printf("调度顺序为"); 
	for (int i = 1; i <= n; ++i) {
		printf("%d ", best[i]);
	}
	printf("\n最小时间为%d", bestf);
}

int main() {
	init();
	backtrack(1);
	show();
	return 0;
}