#include <bits/stdc++.h>

using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int N, M;
  cin >> N >> M;
  vector<int64_t> A(N);
  for (int i = 0; i < N; i++) {
    cin >> A[i];
  }
  int64_t sum = 0;
  for (int i = 0; i < N; i++) {
    if (A[i] % 2 == 0) continue;
    int cnt = 0;
    while (i < N && A[i] % 2 != 0) {
      sum += A[i];
      i++;
      cnt++;
    }
    if (cnt >= M) cout << sum << '\n';
    sum = 0;
  }
  return 0;
}