/** @BY_KUTBILIM **/ #include <bits/stdc++.h> using namespace std; #define ff first #define ss second #define pb push_back #define ll long long int main(){ ios_base::sync_with_stdio(false); cin.tie(); int n, k; cin >> n >> k; ll a[n]; for(int i = 0; i < n; i++){ cin >> a[i]; } sort(a, a + n); ll ans = 0; for(int i = 0; i < k-1; i++){ ans += a[i]; } ans += a[n-1]; cout << ans << endl; return 0; }