#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, k, c = 0;
  cin >> n >> k;
  vector<int> a(n);
  for (int i = 0; i < n; i++) cin >> a[i];
  for (int i = 0; i < n - 1; i++) {
    if (abs(a[i] + a[i + 1]) < k) {
      c += (k - abs(a[i] + a[i + 1]));
      a[i + 1] += (k - abs(a[i] + a[i + 1]));
    }
  }
  cout << c << endl;
  for (int i = 0; i < n; i++) cout << a[i] << " ";
}
