Go: package main

import (
	"bufio"
	_ "container/heap"
	"fmt"
	"os"
	_ "sort"
	"strconv"
)

// I/O
type Scanner struct {
	sc *bufio.Scanner
}

func NewScanner() *Scanner {
	sc := bufio.NewScanner(os.Stdin)
	sc.Split(bufio.ScanWords)
	sc.Buffer(make([]byte, 1024), int(1e+9))
	return &Scanner{sc}
}

func (s *Scanner) nextStr() string {
	s.sc.Scan()
	return s.sc.Text()
}

func (s *Scanner) nextInt() int {
	i, e := strconv.Atoi(s.nextStr())
	if e != nil {
		panic(e)
	}
	return i
}

func (s *Scanner) nextFloat() float64 {
	f, e := strconv.ParseFloat(s.nextStr(), 64)
	if e != nil {
		panic(e)
	}
	return f
}

func (s *Scanner) nextRuneSlice() []rune {
	return []rune(s.nextStr())
}

func (s *Scanner) nextIntSlice(n int) []int {
	res := make([]int, n)
	for i := 0; i < n; i++ {
		res[i] = s.nextInt()
	}
	return res
}

func (s *Scanner) nextFloatSlice(n int) []float64 {
	res := make([]float64, n)
	for i := 0; i < n; i++ {
		res[i] = s.nextFloat()
	}
	return res
}

// Arithmetic
func max(nums ...int) int {
	m := nums[0]
	for _, i := range nums {
		if m < i {
			m = i
		}
	}
	return m
}

func min(nums ...int) int {
	m := nums[0]
	for _, i := range nums {
		if m > i {
			m = i
		}
	}
	return m
}

func abs(x int) int {
	if x > 0 {
		return x
	}
	return -x
}

func pow(x, y int) int {
	res := 1
	for i := 0; i < y; i++ {
		res *= x
	}
	return res
}

func ceil(a, b int) int {
	if a%b == 0 {
		return a / b
	} else {
		return a/b + 1
	}
}

func gcd(a, b int) int {
	if b == 0 {
		return a
	}
	return gcd(b, a%b)
}

func lcm(a, b int) int {
	return a / gcd(a, b) * b
}

// Sort
type RuneSlice []rune

func (a RuneSlice) Len() int           { return len(a) }
func (a RuneSlice) Less(i, j int) bool { return a[i] < a[j] }
func (a RuneSlice) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }

// Main
const MOD = int(1e+9) + 7
const INF = 1 << 60

func main() {
	sc := NewScanner()
	wtr := bufio.NewWriter(os.Stdout)
	defer wtr.Flush()
	for true {
		N, M := sc.nextInt(), sc.nextInt()
		if N == 0 && M == 0 {
			break
		}
		C := sc.nextIntSlice(M)
		X := sc.nextIntSlice(N)
		dp := make([][256]int, N+1)
		for i := 0; i < N+1; i++ {
			for j := 0; j < 256; j++ {
				dp[i][j] = INF
			}
		}
		dp[0][128] = 0
		for i := 0; i < N; i++ {
			for j := 0; j < 256; j++ {
				if dp[i][j] == INF {
					continue
				}
				for k := 0; k < M; k++ {
					nex := j + C[k]
					if nex < 0 {
						nex = 0
					}
					if nex > 255 {
						nex = 255
					}
					dp[i+1][nex] = min(dp[i+1][nex], dp[i][j]+pow(X[i]-nex, 2))
				}
			}
		}
		ans := INF
		for i := 0; i < 256; i++ {
			ans = min(ans, dp[N][i])
		}
		fmt.Fprintln(wtr, ans)
	}
}

C++: #include <iostream>
#include <climits>
#include <algorithm>
using namespace std;

int main(){
	int C[16];
	int n,m;
	while(cin >> n >> m){
		for(int i = 0 ; i < m ; i++) cin >> C[i];
		unsigned int dp[2][256];
		for(int i = 0 ; i < 2 ; i++)
			for(int j = 0 ; j < 256 ; j++)
				dp[i][j] = INT_MAX;
		dp[0][128] = 0;
		
		for(int j = 1 ; j <= n ; j++){
			int x; cin >> x;
			for(int i = 0 ; i < 256 ; i++) dp[j&1][i] = INT_MAX;
			for(int i = 0 ; i < 256 ; i++){
				for(int k = 0 ; k < m ; k++){
					int y = i + C[k];
					y = min(y,255); y = max(0,y);
					dp[j&1][y] = min(dp[j&1][y],dp[j&1^1][i] + (y-x)*(y-x) );
				}
			}
		}
		cout << *min_element(dp[n&1],dp[n&1]+256) << endl;
	}
}

C++: #include <iostream>
#include <algorithm>

using namespace std;

const int INF = 1<<30;

int n, m, data[16], dp[2][256], in;

main(){
  while(cin >> n >> m && (n|m)){
    for(int i=0;i<m;i++) cin >> data[i];
    fill(dp[0], dp[2], INF);
    dp[0][128] = 0;
    for(int i=0;i<n;i++){
      cin >> in;
      for(int j=0;j<256;j++) dp[(i+1)%2][j] = INF;
      for(int j=0;j<256;j++){
        if(dp[i%2][j] == INF) continue;
        for(int k=0;k<m;k++){
          int next = j + data[k];
          if(next < 0) next = 0;
          if(next > 255) next = 255;
          dp[(i+1)%2][next] = min(dp[(i+1)%2][next], abs(in-(next)) * abs(in-(next)) + dp[i%2][j]);
        }
      }
    }
    int ans = INF;
    for(int i=0;i<256;i++) ans = min(ans, dp[n%2][i]);
    cout << ans << endl;
  }
}

C++: #include<bits/stdc++.h>
#define INF 0x3f3f3f3f
#define rep(i,n)for(int i=0;i<(n);i++)
using namespace std;

int c[16], x[20001];
int dp[20001][256];
int main() {
	int n, m;
	while (scanf("%d%d", &n, &m), n) {
		rep(i, m)scanf("%d", &c[i]);
		rep(i, n)scanf("%d", &x[i]);
		memset(dp, 0x3f, sizeof(dp));
		dp[0][128] = 0;
		rep(i, n)rep(j, 256) {
			if (dp[i][j] == INF)continue;
			rep(k, m) {
				int a = min(255, max(0, j + c[k]));
				dp[i + 1][a] = min(dp[i + 1][a], dp[i][j] + (x[i] - a)*(x[i] - a));
			}
		}
		int Min = INF;
		rep(j, 256)Min = min(Min, dp[n][j]);
		printf("%d\n", Min);
	}
}

C++: #include<iostream>
#include<algorithm>
#include<cmath>

int INFI = 1e9;

using namespace std;

int main() {
	int n, m;
	while (1) {
		cin >> n >> m;
		if (n == 0)break;
		int *c = new int[m];
		int* x = new int[n];
		for (int i = 0;i < m;i++) {
			cin >> c[i];
		}
		for (int i = 0;i < n;i++) {
			cin >> x[i];
		}
		int** gosa = new int*[n];
		for (int i = 0;i < n;i++) {
			gosa[i] = new int[256];
			for (int j = 0;j < 256;j++) {
				gosa[i][j] = INFI;
			}
		}
		for (int i = 0;i < m;i++) {
			if (128 + c[i] >= 255) {
				gosa[0][255] = min(gosa[0][255],(int)pow(255 - x[0], 2));
			}
			else if (128 + c[i] <= 0) {
				gosa[0][0] = min(gosa[0][0],(int)pow(x[0], 2));
			}
			else {
				gosa[0][128 + c[i]] = pow(x[0]-128-c[i], 2);
			}
		}
		for (int i = 1;i < n;i++) {
			for (int j = 0;j < 256;j++) {
				if (j == 0) {
					for (int k = 0;k < m;k++) {
						if (c[k] > 0)continue;
						for (int l = -c[k];l >= 0;l--) {
							gosa[i][0] = min(gosa[i][0], gosa[i - 1][l] + (int)pow(x[i], 2));
						}
					}
				}
				else if (j == 255) {
					for (int k = 0;k < m;k++) {
						if (c[k] < 0)continue;
						for (int l = 255 - c[k];l < 256;l++) {
							gosa[i][255] = min(gosa[i][255], gosa[i - 1][l] + (int)pow(255 - x[i], 2));
						}
					}
				}
				else {
					for (int k = 0;k < m;k++) {
						if (j - c[k] < 0 || j - c[k]>255)continue;
						gosa[i][j] = min(gosa[i][j], gosa[i - 1][j - c[k]] + (int)pow(j - x[i], 2));
					}
				}
			}
		}
		int ans = gosa[n-1][0];
		for (int i = 1;i < 256;i++) {
			ans = min(ans, gosa[n - 1][i]);
		}

		cout << ans << endl;
	}
}

C++: #include<iostream>
#include<algorithm>
using namespace std;
#define REP(i,b,n) for(int i=b;i<n;i++)
#define rep(i,n)   REP(i,0,n)

const int inf = ( 1 << 28);

int dp[20001][256];
int solve(int n,int m,int *cbook,int *in){
  rep(i,n+1)rep(j,256)dp[i][j]=inf;
  dp[0][128]=0;

  rep(i,n){
    rep(j,256){
      rep(k,m){
	int next=j+cbook[k];
	if (next<0)next=0;
	else if (next>255)next=255;
	dp[i+1][next]=min(dp[i+1][next],dp[i][j]+(next-in[i])*(next-in[i]));
      }
    }
  }
  
  int ans = inf;
  rep(i,256)ans=min(ans,dp[n][i]);
  return ans;
}


main(){
  int n,m;
  int in[20000],cbook[200];
  while(scanf("%d%d",&n,&m) && n){
    rep(i,m)scanf("%d",&cbook[i]);
    rep(i,n)scanf("%d",&in[i]);
    cout << solve(n,m,cbook,in) << endl;
  }
}

C++: #include<bits/stdc++.h>
#define INF 0x3f3f3f3f
#define rep(i,n)for(int i=0;i<(n);i++)
using namespace std;

int c[16], x[20001];
int dp[20001][256];
int main() {
	int n, m;
	while (scanf("%d%d", &n, &m), n) {
		rep(i, m)scanf("%d", &c[i]);
		rep(i, n)scanf("%d", &x[i]);
		memset(dp, 0x3f, sizeof(dp));
		dp[0][128] = 0;
		rep(i, n)rep(j, 256) {
			if (dp[i][j] == INF)continue;
			rep(k, m) {
				int a = min(255, max(0, j + c[k]));
				dp[i + 1][a] = min(dp[i + 1][a], dp[i][j] + (x[i] - a)*(x[i] - a));
			}
		}
		int Min = INF;
		rep(j, 256)Min = min(Min, dp[n][j]);
		printf("%d\n", Min);
	}
}