暴力求解:
#include<iostream>
using namespace std;
int main() {int N;cin >> N;int* A new int[N];int* B new int[N];int* C new int[N];for (int i 0; i < N;i) {cin >> A[i];}for (int i 0; i < N; i) {cin >> B[i];}for…
作业要求 触发器
mysql> create trigger after_order_insert -> after insert on orders -> for each row -> update goods set num num - new.onum where gid new.gid; mysql> create trigger after_order_delete -> after delete on or…