#include <iostream>
#include<bits/stdc++.h>
using namespace std;
int main() {
// your code goes here
vector<int>arr={1,3,4,5};
for(auto it=arr.rbegin();it!=arr.rend();it++){
cout<<*it<<endl;
}
for(auto it=arr.begin();it!=arr.end();it++){
cout<<*it<<endl;
}
return 0;
}
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