#include<bits/stdc++.h>
using namespace std;

int main(){
    long N, M;
    cin >> N >> M;
    long s{0}, l{0}, a{0};
    while(N--){
        cin >> a;
        if(a & 1){
            s += a;
            ++l;
        }else{
            if(l >= M)cout << s << endl;
            s = l = 0;
        }
    }
    if(l >= M)cout << s << endl;
    s = l = 0;
    return 0;
}