#include #define rep(i,a,b) for(int i=a;i=b;i--) #define fore(i,a) for(auto &i:a) #define all(x) (x).begin(),(x).end() //#pragma GCC optimize ("-O3") using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); } typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60; templatebool chmax(T& a, const T& b) { if (a < b) { a = b; return 1; } return 0; } templatebool chmin(T& a, const T& b) { if (b < a) { a = b; return 1; } return 0; } //--------------------------------------------------------------------------------------------------- /*---------------------------------------------------------------------------------------------------             ∧_∧       ∧_∧  (´<_` )  Welcome to My Coding Space!      ( ´_ゝ`) /  ⌒i @hamayanhamayan0     /   \    | |     /   / ̄ ̄ ̄ ̄/  |   __(__ニつ/  _/ .| .|____      \/____/ (u ⊃ ---------------------------------------------------------------------------------------------------*/ int H, W; string A[2020]; int dp[2020][2020]; //--------------------------------------------------------------------------------------------------- void _main() { cin >> H >> W; rep(y, 0, H) cin >> A[y]; rep(y, 0, H) rep(x, 0, W) dp[y][x] = inf; dp[0][0] = 0; rep(y, 0, H) rep(x, 0, W) { int d = A[y][x] == 'k' ? x + y : 0; if (x) chmin(dp[y][x], dp[y][x - 1] + 1 + d); if (y) chmin(dp[y][x], dp[y - 1][x] + 1 + d); } cout << dp[H - 1][W - 1] << endl; }