#include <bits/stdc++.h>
#define file_in(x) (freopen(#x".in", "r", stdin))
#define file_out(x) (freopen(#x".out", "w", stdout))
#define int long long
#define ull unsigned long long
#define vi vector
#define pb push_back
#define db long double
#define pr pair <int, int>
#define mk make_pair
#define fi first
#define se second
#define lb(x) (x & (-x))

using namespace std;

char _c; bool _f; template <class T> void IN(T &x) {
  _f = x = 0; while (_c = getchar(), !isdigit(_c)) {if (_c == '-') _f = 1;}
  while (isdigit(_c)) {x = x * 10 + _c - '0', _c = getchar();} if (_f) x = -x;
}

template <class T> void _write(T x) {
  if (x < 0) return putchar('-'), _write(-x), void();
  if (x > 9) _write(x / 10);
  putchar('0' + x % 10);
}
template <class T> void write(T x) {_write(x), putchar('\n');}
template <class T> void write_s(T x) {_write(x), putchar(' ');}
template <class first, class... rest> void write(first fir, rest... res) {
  write_s(fir), write(res...);
}

#define debug(...) (_debug(#__VA_ARGS__, __VA_ARGS__))
template <class T> void _debug(const char *format, T x) {
  cerr << format << " = " << x << endl;
}
template <class first, class... rest>
void _debug(const char *format, first fir, rest... res) {
  while (*format != ',') cerr << *format++;
  cerr << " = " << fir << ',', _debug(format + 1, res...);
}

bool START;

const int N = 5e4 + 5, M = 15, inf = 1e14;

int n, K, c[N][M], mtc[N], dis[M], d[M][M], pre[M], ans, a[N];
bool vis[M];
queue <int> q;

struct heap {
  priority_queue <pr, vi <pr>, greater <pr> > q;

  void push(pr t) {q.push(t);}

  void pop(int t = 0) {
    while (!q.empty() && mtc[q.top().se] != t) q.pop();
  }

  pr top() {
    if (q.empty()) return mk(-1, -1);
    return q.top();
  }

} f[M][M], g[M];

bool END;

void spfa(int n) {
  while (!q.empty()) {
    int x = q.front(); q.pop();
    vis[x] = 0;
    for (int y = 1; y <= n; ++y)
      if (dis[x] + d[x][y] < dis[y]) {
	dis[y] = dis[x] + d[x][y], pre[y] = x;
	if (!vis[y]) vis[y] = 1, q.push(y);
      }
  }
}

signed main() {
  //仔细检查，边界，特殊情况 ! ! !
  cerr << (&END - &START) / 1024.0 / 1024.0 << endl;
  IN(n), IN(K);
  for (int i = 1; i <= n; ++i)
    for (int j = 1; j <= K; ++j)
      IN(c[i][j]), g[j].push(mk(c[i][j], i));
  for (int i = 1; i <= K; ++i) IN(a[i]);
  int num = n;
  while (num--) {
    for (int i = 0; i <= K; ++i) dis[i] = inf, vis[i] = pre[i] = 0;
    for (int i = 0; i <= K; ++i) for (int j = 0; j <= K; ++j) d[i][j] = inf;
    while (!q.empty()) q.pop();

    for (int i = 1; i <= K; ++i) {
      g[i].pop();
      if (g[i].top().se != -1) dis[i] = g[i].top().fi, vis[i] = 1, q.push(i);
    }

    for (int i = 1; i <= K; ++i)
      for (int j = 1; j <= K; ++j)
	if (i != j) {
	  f[i][j].pop(i);
	  if (f[i][j].top().se != -1)
	    d[i][j] = f[i][j].top().fi;
	}
    spfa(K);
    int p = 0; dis[0] = inf;
    for (int i = 1; i <= K; ++i) if (a[i] && dis[i] < dis[p]) p = i;
    a[p]--, ans += dis[p];
    while (p) {
      int x = pre[p], y = x ? f[x][p].top().se : g[p].top().se;
      mtc[y] = p;
      for (int i = 1; i <= K; ++i)
	if (i != p)
	  f[p][i].push(mk(c[y][i] - c[y][p], y));
      p = x;
    }
  }
  write(ans);
  return 0;
}