//
// Created by yamunaku on 2020/01/17.
//

#include <bits/stdc++.h>

using namespace std;

#define rep(i, n) for(int i = 0; i < (n); i++)
#define repl(i, l, r) for(int i = (l); i < (r); i++)
#define per(i, n) for(int i = ((n)-1); i >= 0; i--)
#define perl(i, l, r) for(int i = ((r)-1); i >= (l); i--)
#define all(x) (x).begin(),(x).end()
#define MOD9 998244353
#define MOD1 1000000007
#define IINF 1000000000
#define LINF 1000000000000000000
#define SP <<" "<<
#define CYES cout<<"Yes"<<endl
#define CNO cout<<"No"<<endl
#define CFS cin.tie(0);ios::sync_with_stdio(false)
#define CST(x) cout<<fixed<<setprecision(x)

using ll = long long;
using ld = long double;
using vi = vector<int>;
using mti = vector<vector<int>>;
using vl = vector<ll>;
using mtl = vector<vector<ll>>;
using pi = pair<int, int>;
using pl = pair<ll, ll>;
template<typename T>
using heap = priority_queue<T, vector<T>, function<bool(const T, const T)>>;

int main(){
    // CFS;
    int h, w;
    cin >> h >> w;
    vector<string> f(h);
    rep(i, h) cin >> f[i];
    mtl dp(h, vl(w, IINF));
    dp[0][0] = 0;
    rep(i, h){
        rep(j, w){
            if(i > 0) dp[i][j] = min(dp[i][j], dp[i - 1][j] + 1);
            if(j > 0) dp[i][j] = min(dp[i][j], dp[i][j - 1] + 1);
            if(f[i][j] == 'k'){
                dp[i][j] += i + j;
            }
        }
    }
    cout << dp[h - 1][w - 1] << endl;
    return 0;
}