Sinh test (input và output đồng thời)

#include<bits/stdc++.h>

using namespace std;

long long Rand(long long l, long long h)

{

return l + ((long long)rand() * (RAND_MAX + 1) * (RAND_MAX + 1) * (RAND_MAX + 1) +

            (long long)rand() * (RAND_MAX + 1) * (RAND_MAX + 1) +

            (long long)rand() * (RAND_MAX + 1) +

            rand()) % (h - l + 1);

}

void write(string t,string t1){

   ofstream fileOutput(t);
   ofstream fileOutput1(t1);

   if(fileOutput.fail()){

     cout<<"Cannot open file at "<<t<<'\n';

   }
   long long tmp=Rand(1,1000);
   fileOutput<<tmp<<'\n';
   if(tmp<=2) fileOutput1<<tmp+2<<'\n';
   else fileOutput1<<tmp-2<<'\n';

}

int main(){

    srand(time(NULL));

    int i;

    string s="",s1="";

    for(i=0;i<100;i++){

       s="C:/New folder/aka/"+to_string(i+1)+".inp";
       s1="C:/New folder/aka_1/"+to_string(i+1)+".out";

       write(s,s1);


    }

    return 0;

}

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