#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
#define PII pair<int, int> 
const int N = 1e5+10;
int dx[4] = {-1, 0, 1, 0};
int dy[4] = {0, 1, 0, -1};
int gcd(int x,int y){
    return y ? gcd(y, x % y) : x;
}
const int mod = 1e9 + 7;
void solve()
{
    int n, m;
    cin >> n >> m;
    priority_queue<int,vector<int>,greater<int>>q;
    for (int i = 0; i < n; i++){
        int x;
        cin >> x;
        q.push(x);
    }
    while(m --){
        auto u = q.top();
        q.pop();
        q.push(u * 2);
    }
    int ans = 0; 
    while(q.size()){
        auto u = q.top();
        q.pop();
        ans += u;
        ans %= mod;
    }
    cout << ans % mod<<  endl;
}
signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    int _;
    _ = 1;
    //cin >> _;
    while (_--)
    {
        solve();
    }

    return 0;
}

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
#define PII pair<int, int> 
const int N = 1e5+10;
int dx[4] = {-1, 0, 1, 0};
int dy[4] = {0, 1, 0, -1};
int gcd(int x,int y){
    return y ? gcd(y, x % y) : x;
}
const int mod = 1e9 + 7;
void solve()
{
    int n, m;
    cin >> n >> m;
    priority_queue<int,vector<int>,greater<int>>q;
    for (int i = 0; i < n; i++){
        int x;
        cin >> x;
        q.push(x);
    }
    while(m --){
        auto u = q.top();
        q.pop();
        q.push(u * 2);
    }
    int ans = 0; 
    while(q.size()){
        auto u = q.top();
        q.pop();
        ans += u;
        ans %= mod;
    }
    cout << ans % mod<<  endl;
}
signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    int _;
    _ = 1;
    //cin >> _;
    while (_--)
    {
        solve();
    }

    return 0;
}

answer.code:57:11: error: redefinition of ‘const long long int N’
   57 | const int N = 1e5+10;
      |           ^
answer.code:6:11: note: ‘const long long int N’ previously defined here
    6 | const int N = 1e5+10;
      |           ^
answer.code:58:5: error: redefinition of ‘long long int dx [4]’
   58 | int dx[4] = {-1, 0, 1, 0};
      |     ^~
answer.code:7:5: note: ‘long long int dx [4]’ previously defined here
    7 | int dx[4] = {-1, 0, 1, 0};
      |     ^~
answer.code:59:5: error: redefinition of ‘long long int dy [4]’
   59 | int dy[4] = {0, 1, 0, -1};
      |     ^~
answer.code:8:5: note: ‘long long int dy [4]’ previously defined here
    8 | int dy[4] = {0, 1, 0, -1};
      |     ^~
answer.code:60:5: error: redefinition of ‘long long int gcd(long long int, long long int)’
   60 | int gcd(int x,int y){
      |     ^~~
answer.code:9:5: note: ‘long long int gcd(long long int, long long int)’ previously defined here
    9 | int gcd(int x,int y){
      |     ^~~
answer.code:63:11: error: redefinition of ‘const long long int mod’
   63 | const int mod = 1e9 + 7;
      |           ^~~
answer.code:12:11: note: ‘const long long int mod’ previously defined here
   12 | const int mod = 1e9 + 7;
      |           ^~~
answer.code:64:6: error: redefinition of ‘void solve()’
   64 | void solve()
      |      ^~~~~
answer.code:13:6: note: ‘void solve()’ previously defined here
   13 | void solve()
      |      ^~~~~
answer.code:88:8: error: redefinition of ‘int main()’
   88 | signed main()
      |        ^~~~
answer.code:37:8: note: ‘int main()’ previously defined here
   37 | signed main()
      |        ^~~~