I solved the question and it run smoothly in vs code but not in codechef IDE
**Code **
#include<iostream>
using namespace std;
int main ()
{ int sum ;
int n,t;
cin>>t;
while(t--)
{ int count =0;
cin>>n;
int temp =n;
while (n>0)
{
n=n/10;
count++;
}
n=temp;
// cout<<n<<endl;
int store [count];
for (int i=0;i<count;i++)
{
if (n>0)
{
store[i]=n%10;
n=n/10;
}else{
break;
}
}
if(count>1){
sum =store[0]+store[count-1];
}else{
sum =store[0];
}
cout<<sum<<endl;
}
return 0;
}