prabodhprakash

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#include <bits/stdc++.h>
 
using namespace std;
 
//error
#define error(args...) { string _s = #args; replace(_s.begin(), _s.end(), ',', ' '); stringstream _ss(_s); istream_iterator<string> _it(_ss); err(_it, args); }
 
void err(istream_iterator<string> it) {}

prabodhprakash

/*
if let's say there is an array of size n, and input have to be taken, below is the best way to do it
*/

cin >> arrSize;
vector<int> arr(arrSize);
for (auto &it: arr) {
			cin >> it;
}

prabodhprakash

https://codeforces.com/problemset/problem/1213/B
https://codeforces.com/problemset/problem/617/B
https://codeforces.com/problemset/problem/588/B
https://codeforces.com/problemset/problem/1363/B
https://codeforces.com/problemset/problem/1/B