#include <iostream>
#include <string>
#include <list>
#include <vector>

using namespace std;

int main()
{
	int N, M;
	cin >> N >> M;
	vector<long long int> A(N);
	for (int i = 0; i < N; i++) {
		cin >> A.at(i);
	}

	long long int S = 0;
	int cnt = 0;
	for (int i = 0; i < N; i++) {
		if (A.at(i) % 2 == 0) {//even
//			cout << "even" << endl;
			if (cnt >= M) {
				cout << S << endl;
			}
			S = 0;
			cnt = 0;
		}else{//odd
//			cout << "odd" << endl;
			cnt++;
			S += A.at(i);
		}

	}

	if (cnt >= M) cout << S << endl;
	return 0;

}