ECAUG202 - Editorial

editorial
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1

PROBLEM LINK:

Practice
Contest

Author: Sunita Sen
Tester: Arnab Chanda
Editorialist: Sunita Sen

DIFFICULTY:

CAKEWALK

PREREQUISITES:

None

PROBLEM:

Find the sum of all integers whose LSB is 0.

EXPLANATION:

An even integer has its LSB as 0, hence we need to find the sum of all even integers.

SOLUTIONS:

Cpp Solution 
#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(ll i=0;i<(n);i++)
#define FOR(i,a,b) for(ll i=(a);i<(b);i++)
#define dfor(i,a,b) for(ll i=(a);i>=(b);i--)
#define mem(u, vis) memset(u, vis, sizeof(u))
#define ll long long
#define ull unsigned long long
#define MOD  1000000007
#define MAX  1e9
#define pb   push_back
#define F    first
#define S    second

signed main(){
	ll t = 1;
	cin>>t;
	while(t--){
		ll n;
		cin>>n;
		ll sum = 0;
		rep(i,n) {
			ll a;
			cin>>a;
			if(a % 2 == 0) {
				sum += a;
			}
		}
		cout<<sum<<endl;
	}
}
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