#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
    int i, n, k, sum =0;
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    cin >> n >> k;
    vector<int> cs(n);
    for (i = 0; i < n; i++) {
        cin >> cs[i];
        sum += cs[i];
    }
    if (k == 0) {
        cout << sum << endl;
    }
    else {
        
    }
    return 0;
}