#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
constexpr int INF = 1 << 30;
signed main() { 
  ios::sync_with_stdio(false); cin.tie(0);
  int h, w;
  cin >> h >> w;
  vector<string> in(h);
  for (int i = 0; i < h; i++) cin >> in[i];
  vector<vector<int>> dist(h, vector<int>(w, INF));
  dist[0][0] = 0;
  for (int i = 0; i < h; i++) for (int j = 0; j < w; j++) {
    if (in[i][j] == 'k') {
      if (i > 0) dist[i][j] = min(dist[i][j], dist[i - 1][j] + j + i + 1);
      if (j > 0) dist[i][j] = min(dist[i][j], dist[i][j - 1] + j + i + 1);
    } else {
      if (i > 0) dist[i][j] = min(dist[i][j], dist[i - 1][j] + 1);
      if (j > 0) dist[i][j] = min(dist[i][j], dist[i][j - 1] + 1);
    }
  }
  cout << dist[h - 1][w - 1] << '\n';
  return 0;
}