#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, k;
  cin >> n >> k;
  int arr[n];
  for (int i = 0; i < n; i++) {
    cin >> arr[i];
  }
  int ans = 0;
  for (int i = 1; i < n; i++) {
    int a = max(0, k - (arr[i] + arr[i - 1]));
    arr[i] += a;
    ans += a;
  }
  cout << ans << "\n";
  for (int i = 0; i < n; i++) cout << arr[i] << " ";
}
