#include <bits/stdc++.h>
using namespace std;

int main() {
    const int inf = 1000000000;
    int h, w;
    cin >> h >> w;
    vector<string> a(h);
    for (int i = 0; i < h; i++) cin >> a[i];
    vector<vector<int>> cost(h, vector<int>(w, inf));
    cost[0][0] = 0;
    for (int i = 0; i < h; i++) {
        for (int j = 0; j < w; j++) {
            int k = (a[i][j] == 'k') ? i + j : 0;
            if (i > 0) {
                cost[i][j] = min(cost[i][j], cost[i - 1][j] + 1 + k);
            }
            if (j > 0) {
                cost[i][j] = min(cost[i][j], cost[i][j - 1] + 1 + k);
            }
        }
    }
    cout << cost[h - 1][w - 1] << endl;
}