#pragma comment(linker, "/STACK:1024000000,1024000000")#include<cstdio>#include<cstring>#include<cmath>#include<algorithm>#include<vector>#include<map>#include<set>#include<queue>#include<stack>#include<ctime>#include<iostream>using namespace std;typedef long long LL;const double pi=acos(-1.0),eps=1e-10;void File(){    freopen("D:\\in.txt","r",stdin);    freopen("D:\\out.txt","w",stdout);}template <class T>inline void read(T &x){    char c = getchar();    x = 0;    while(!isdigit(c)) c = getchar();    while(isdigit(c))    {        x = x * 10 + c - ‘0‘;        c = getchar();    }}int n,k;int a[600],b[600];int main(){    cin>>n>>k;    for(int i=1;i<=n;i++) cin>>a[i];    int sum=0;    b[1]=a[1];    for(int i=2;i<=n;i++)    {        b[i]=a[i];        if(b[i-1]+b[i]>=k) continue;        sum=sum+k-(b[i-1]+b[i]);        b[i]+=k-(b[i-1]+b[i]);    }    cout<<sum<<endl;    for(int i=1;i<=n;i++) cout<<b[i]<<" ";    cout<<endl;    return 0;}