first test case is failing whereas in ide correct output is coming
#include
using namespace std;
int main() {
int n;
cin>>n;
int a[1000],b[1000],c[2000];
int i;
for(i=0;i<n;i++)
cin>>a[i];
for(i=0;i<n;i++)
cin>>b[i];
int j=0;
for(i=0;i<n;i++){
c[j]=a[i];
c[j+1]=b[i];
j=j+2;
}
cout<<(c[n-1]+c[n])/2;
return 0;
}