A third-grade mathematics question in a Vietnamese primary school

A third-grade mathematics question in a Vietnamese primary school

After seeing this news, I felt a little speechless. This question is not so exaggerated. It is also simple to write programs. I hope that the news reported by the media will be like a news report, I hope to report more valuable news about science and technology and the economy. Let's just talk about the code.

#include<iostream>#include<stdlib.h>#include<fstream>#include<time.h>using namespace std;int main(){    fstream outfile;    outfile.open("outNum.txt",ios::out);    cout<<"beginnig the count"<<endl;    time_t begin_time=time(0);    tm tim_begin=*localtime(&begin_time);    int allofNum=0,num=0;    for(int a=1;a<10;a++){        for(int b=1;b<10;b++){            for(int c=1;c<10;c++){                for(int d=1;d<10;d++){                    for(int e=1;e<10;e++){                        for(int f=1;f<10;f++){                            for(int g=1;g<10;g++){                                for(int h=1;h<10;h++){                                    for(int i=1;i<10;i++){                                        int N[9]={a,b,c,d,e,f,g,h,i};                                        if(66==a+13*b/c+d+12*e-f-11+g*h/i-10&&(0==b%c)&&(0==g%h)){                                                     outfile<<a<<","<<b<<","<<c<<","<<d<<","<<e<<","<<f<<","<<g<<","<

From the output, we can see that there are a total of 230389 solutions to the above questions. It takes 9 seconds to use the most basic Buddha for loop computation. If there is any error, I hope you can point it out.