using System; using System.Collections.Generic; using System.Linq; using System.IO; class Program { const int M = 1000000007; const double eps = 1e-9; static int[] dd = { 0, 1, 0, -1, 0 }; static void Main() { var sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false }; var sc = new Scan(); int n, m; sc.Multi(out n, out m); var s = new string[n]; var vis = new bool[n][]; for (int i = 0; i < n; i++) { s[i] = sc.Str; vis[i] = new bool[m]; } int ans = 0, b = 0, w = 0; for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { if ((s[i][j] == 'b' || s[i][j] == 'w') && !vis[i][j]) { var qi = new Queue(); var qj = new Queue(); int bb = 0, ww = 0; vis[i][j] = true; if (s[i][j] == 'b') ++bb; else ++ww; qi.Enqueue(i); qj.Enqueue(j); while (qi.Any()) { int pi = qi.Dequeue(), pj = qj.Dequeue(); for (int k = 0; k < 4; k++) { int ti = pi + dd[k], tj = pj + dd[k + 1]; if (ti >= 0 && ti < n && tj >= 0 && tj < m && !vis[ti][tj] && (s[ti][tj] == 'b' || s[ti][tj] == 'w')) { vis[ti][tj] = true; if (s[ti][tj] == 'b') ++bb; else ++ww; qi.Enqueue(ti); qj.Enqueue(tj); } } } int mi = Math.Min(bb, ww); ans += mi * 100; b += bb - mi; w += ww - mi; } } } ans += Math.Min(b, w) * 8 + b + w; sw.WriteLine(ans); sw.Flush(); } static void swap(ref T a, ref T b) { var t = a; a = b; b = t; } static void swap(IList a, int i, int j) { var t = a[i]; a[i] = a[j]; a[j] = t; } static T Max(params T[] a) { return a.Max(); } static T Min(params T[] a) { return a.Min(); } static void DBG(params T[] a) { Console.WriteLine(string.Join(" ", a)); } static void DBG(params object[] a) { Console.WriteLine(string.Join(" ", a)); } static T[] copy(IList a) { var ret = new T[a.Count]; for (int i = 0; i < a.Count; i++) ret[i] = a[i]; return ret; } } class Scan { public int Int { get { return int.Parse(Str); } } public long Long { get { return long.Parse(Str); } } public double Double { get { return double.Parse(Str); } } public string Str { get { return Console.ReadLine().Trim(); } } public int[] IntArr { get { return StrArr.Select(int.Parse).ToArray(); } } public int[] IntArrWithSep(char sep) { return Str.Split(sep).Select(int.Parse).ToArray(); } public long[] LongArr { get { return StrArr.Select(long.Parse).ToArray(); } } public double[] DoubleArr { get { return StrArr.Select(double.Parse).ToArray(); } } public string[] StrArr { get { return Str.Split(); } } T cv(string inp) { if (typeof(T).Equals(typeof(int))) return (T)Convert.ChangeType(int.Parse(inp), typeof(T)); if (typeof(T).Equals(typeof(long))) return (T)Convert.ChangeType(long.Parse(inp), typeof(T)); if (typeof(T).Equals(typeof(double))) return (T)Convert.ChangeType(double.Parse(inp), typeof(T)); if (typeof(T).Equals(typeof(char))) return (T)Convert.ChangeType(inp[0], typeof(T)); return (T)Convert.ChangeType(inp, typeof(T)); } public void Multi(out T a) { a = cv(Str); } public void Multi(out T a, out U b) { var ar = StrArr; a = cv(ar[0]); b = cv(ar[1]); } public void Multi(out T a, out U b, out V c) { var ar = StrArr; a = cv(ar[0]); b = cv(ar[1]); c = cv(ar[2]); } public void Multi(out T a, out U b, out V c, out W d) { var ar = StrArr; a = cv(ar[0]); b = cv(ar[1]); c = cv(ar[2]); d = cv(ar[3]); } public void Multi(out T a, out U b, out V c, out W d, out X e) { var ar = StrArr; a = cv(ar[0]); b = cv(ar[1]); c = cv(ar[2]); d = cv(ar[3]); e = cv(ar[4]); } } class mymath { static int Mod = 1000000007; public void setMod(int m) { Mod = m; } public bool isprime(long a) { if (a < 2) return false; for (long i = 2; i * i <= a; i++) if (a % i == 0) return false; return true; } public bool[] sieve(int n) { var isp = new bool[n + 1]; for (int i = 2; i <= n; i++) isp[i] = true; for (int i = 2; i * i <= n; i++) if (isp[i]) for (int j = i * i; j <= n; j += i) isp[j] = false; return isp; } public List getprimes(int n) { var prs = new List(); var isp = sieve(n); for (int i = 2; i <= n; i++) if (isp[i]) prs.Add(i); return prs; } public long[][] E(int n) { var ret = new long[n][]; for (int i = 0; i < n; i++) { ret[i] = new long[n]; ret[i][i] = 1; } return ret; } public long[][] powmat(long[][] A, long n) { if (n == 0) return E(A.Length); var t = powmat(A, n / 2); if ((n & 1) == 0) return mulmat(t, t); return mulmat(mulmat(t, t), A); } public long[] mulmat(long[][] A, long[] x) { int n = A.Length, m = x.Length; var ans = new long[n]; for (int i = 0; i < n; i++) for (int j = 0; j < m; j++) ans[i] = (ans[i] + x[j] * A[i][j]) % Mod; return ans; } public long[][] mulmat(long[][] A, long[][] B) { int n = A.Length, m = B[0].Length, l = B.Length; var ans = new long[n][]; for (int i = 0; i < n; i++) { ans[i] = new long[m]; for (int j = 0; j < m; j++) for (int k = 0; k < l; k++) ans[i][j] = (ans[i][j] + A[i][k] * B[k][j]) % Mod; } return ans; } public long powmod(long a, long b) { if (a >= Mod) return powmod(a % Mod, b); if (a == 0) return 0; if (b == 0) return 1; var t = powmod(a, b / 2); if ((b & 1) == 0) return t * t % Mod; return t * t % Mod * a % Mod; } public long gcd(long a, long b) { while (b > 0) { var t = a % b; a = b; b = t; } return a; } public long lcm(long a, long b) { return a * (b / gcd(a, b)); } public long Comb(int n, int r) { if (n < 0 || r < 0 || r > n) return 0; if (n - r < r) r = n - r; if (r == 0) return 1; if (r == 1) return n; var numerator = new int[r]; var denominator = new int[r]; for (int k = 0; k < r; k++) { numerator[k] = n - r + k + 1; denominator[k] = k + 1; } for (int p = 2; p <= r; p++) { int pivot = denominator[p - 1]; if (pivot > 1) { int offset = (n - r) % p; for (int k = p - 1; k < r; k += p) { numerator[k - offset] /= pivot; denominator[k] /= pivot; } } } long result = 1; for (int k = 0; k < r; k++) if (numerator[k] > 1) result = result * numerator[k] % Mod; return result; } }