就是列个竖式的思想，看着没人我就写一篇啦。

Java 代码

import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner input = new Scanner(System.in);
        int n = input.nextInt();//总共有n位数字
        int[] add = new int[n];
        int[] a = new int[n];
        int[] b = new int[n];
        for(int i = 0 ; i < n ; i++){
            add[i] = input.nextInt();
        }
        for(int i = 0 ; i < n ; i++){
            a[i] = input.nextInt();
        }
        input.nextLine();
        String oper = input.nextLine();
        for(int i = 0 ; i < n ; i++){
            b[i] = input.nextInt();
        }
        int[] res = new int[n];
        if("+".equals(oper)){
            int carry = 0;//保存进位
            for(int i = n - 1 ; i >= 0 ; i--){
                res[i] = (a[i] + b[i] +carry) % add[i];
                carry = (a[i] + b[i] +carry) / add[i];
            }
        }else{
            int bet = 0;//保留借位
            for(int i = n - 1 ; i >= 0 ; i--){
                res[i] = (a[i] - bet - b[i] + add[i]) % add[i];
                bet = (a[i] - bet - b[i]) >= 0 ? 0 : 1;
            }
        }
        for(int i = 0 ; i < n ; i++){
            System.out.print(res[i]);
            if(i != n-1){
                System.out.print(" ");
            }
        }

    }
}