codeforces 732B

B. Cormen — The Best Friend Of a Man

time limit per test

1 second

memory limit per test

256 megabytes

input

standard input

output

standard output

Recently a dog was bought for Polycarp. The dog's name is Cormen. Now Polycarp has a lot of troubles. For example, Cormen likes going for a walk.

Empirically Polycarp learned that the dog needs at least k walks for any two consecutive days in order to feel good. For example, if k = 5and yesterday Polycarp went for a walk with Cormen 2 times, today he has to go for a walk at least 3 times.

Polycarp analysed all his affairs over the next n days and made a sequence of n integers a1, a2, ..., an, where ai is the number of times Polycarp will walk with the dog on the i-th day while doing all his affairs (for example, he has to go to a shop, throw out the trash, etc.).

Help Polycarp determine the minimum number of walks he needs to do additionaly in the next n days so that Cormen will feel good during all the n days. You can assume that on the day before the first day and on the day after the n-th day Polycarp will go for a walk with Cormen exactly k times.

Write a program that will find the minumum number of additional walks and the appropriate schedule — the sequence of integers b1, b2, ..., bn (bi ≥ ai), where bi means the total number of walks with the dog on the i-th day.

Input

The first line contains two integers n and k (1 ≤ n, k ≤ 500) — the number of days and the minimum number of walks with Cormen for any two consecutive days.

The second line contains integers a1, a2, ..., an (0 ≤ ai ≤ 500) — the number of walks with Cormen on the i-th day which Polycarp has already planned.

Output

In the first line print the smallest number of additional walks that Polycarp should do during the next n days so that Cormen will feel good during all days.

In the second line print n integers b1, b2, ..., bn, where bi — the total number of walks on the i-th day according to the found solutions (ai ≤ bi for all i from 1 to n). If there are multiple solutions, print any of them.

Examples

input

3 5
2 0 1

output

4
2 3 2

input

3 1
0 0 0

output

1
0 1 0

input

4 6
2 4 3 5

output

0
2 4 3 5
第一行输入天数n和两天最少步行数k，第二行输入计划步行数，要求输出最少增加的步数和每天的步数，题目实在太长，很长时间才搞明白这道题要做啥。解决方法是优先把步数增加在第二天，因为增加到第二天后在后一天的计算中会减少步数的增加。

#include<iostream>
#define N 505
using namespace std;
int main()
{
    int n, k, walk[N], minwalk=0, twodayWalk;
    cin >> n >> k;
    for (int i = 0;i < n;i++)
        cin >> walk[i];
    for (int i = 1;i < n;i++)
    {
        twodayWalk = walk[i] + walk[i - 1];
        if (twodayWalk < k)
        {
            walk[i] = k - walk[i - 1];
            minwalk += k - twodayWalk;
        }
        else
            continue;
    }
    cout << minwalk << endl;
    for (int i = 0;i < n;i++)
        cout << walk[i] << ' ';
    cout << endl;
    return 0;
}