MAKEDIV3 Make it Divisible Problem Code: MAKEDIV3SolvedSubmit Given an integer N

#include
using namespace std;

int main() {
// your code goes here
int t;
cin>>t;
while(t–)
{
int n;
cin>>n;
if(n==1)
cout<<“3”<<endl;
else if(n==2)
cout<<“15”<<endl;
else{
//sum=6
cout<<“2”;
for(int i=1;i<=n-2;i++)
cout<<“1”;
cout<<“3”<<endl;
}
}
return 0;
}
please-tell-what-is-wrong-in-this?