#include <bits/stdc++.h>
using namespace std;
void solve() {
  int n, k;
  cin >> n >> k;
  int *arr = new int[n];
  for (int i = 0; i < n; i++) cin >> arr[i];
  int res = 0;
  for (int i = 0; i < n - 1; i++) {
    int k1 = arr[i] + arr[i + 1];
    if (k1 < k) {
      arr[i + 1] += k - k1;
      res += k - k1;
    }
  }
  cout << res << "\n";
  for (int i = 0; i < n; i++) cout << arr[i] << " ";
}
int main() {
  solve();
  return 0;
}
