#if __INCLUDE_LEVEL__ == 0 #include __BASE_FILE__ namespace { int op(int x, int y) { return std::min(x, y); } int e() { return inf(); } void solve() { int h, w; scan(h, w); Array2D s(h, w); scan(s.ravel()); std::vector f(w); for (const int i : rep(h - 1) | views::reverse) { for (const int j : rep(w)) { if (s[i][j] == '#') { f[j] = inf(); } } // auto nf = f; atcoder::lazy_segtree seg(w); atcoder::lazy_segtree seg_plus(w); atcoder::lazy_segtree seg_minus(w); for (int l = 0; l < w;) { int r = l + 1; while (r < w && s[i][l] == s[i][r]) { ++r; } if (s[i][l] == '#') { l = r; continue; } for (const int j : rep(l, r)) { if (f[j] == inf()) { continue; } const int L = std::max(j - f[j], l); const int R = std::min(j + f[j] + 1, r); // for (const int k : rep(L, R)) { // chmin(nf[k], f[j]); // } // for (const int k : rep(l, L)) { // chmin(nf[k], j - k); // } // for (const int k : rep(R, r)) { // chmin(nf[k], k - j); // } seg.apply(L, R, f[j]); seg_plus.apply(l, L, j); seg_minus.apply(R, r, -j); } for (const int j : rep(l, r)) { chmin(f[j], seg.get(j)); chmin(f[j], seg_plus.get(j) - j); chmin(f[j], seg_minus.get(j) + j); } l = r; } // f = std::move(nf); } for (const int j : rep(w)) { print(f[j]); } } } // namespace int main() { std::ios::sync_with_stdio(false); std::cin.tie(nullptr); std::cout << std::setprecision(DBL_DECIMAL_DIG); solve(); } #else // __INCLUDE_LEVEL__ #include #include template class Array2D { public: Array2D() : Array2D(0, 0) {} Array2D(int rows, int cols) : rows_(rows), cols_(cols), data_(size()) {} Array2D(int rows, int cols, const T& value) : rows_(rows), cols_(cols), data_(size(), value) {} int size() const { return rows_ * cols_; } int rows() const { return rows_; } int cols() const { return cols_; } auto operator[](int i) { return std::span(data_.data() + i * cols_, cols_); } auto operator[](int i) const { return std::span(data_.data() + i * cols_, cols_); } auto ravel() { return std::span(data_); } auto ravel() const { return std::span(data_); } private: int rows_; int cols_; std::vector data_; }; template bool chmin(T& x, U&& y) { return y < x && (x = std::forward(y), true); } template bool chmax(T& x, U&& y) { return x < y && (x = std::forward(y), true); } template T inf() { T ret; std::memset(&ret, 0x3f, sizeof(ret)); return ret; } template T inf() { return std::numeric_limits::infinity(); } template concept Range = std::ranges::range && !std::convertible_to; template concept Tuple = std::__is_tuple_like::value && !Range; namespace std { istream& operator>>(istream& is, Range auto&& r) { for (auto&& e : r) { is >> e; } return is; } istream& operator>>(istream& is, Tuple auto&& t) { return apply([&](auto&... xs) -> istream& { return (is >> ... >> xs); }, t); } ostream& operator<<(ostream& os, Range auto&& r) { for (string_view sep = ""; auto&& e : r) { os << exchange(sep, " ") << e; } return os; } ostream& operator<<(ostream& os, Tuple auto&& t) { const auto f = [&](auto&... xs) -> ostream& { [[maybe_unused]] string_view sep = ""; ((os << exchange(sep, " ") << xs), ...); return os; }; return apply(f, t); } } // namespace std void scan(auto&&... xs) { std::cin >> std::tie(xs...); } void print(auto&&... xs) { std::cout << std::tie(xs...) << '\n'; } template class fix { public: explicit fix(F f) : f_(std::move(f)) {} decltype(auto) operator()(auto&&... xs) const { return f_(std::ref(*this), std::forward(xs)...); } private: F f_; }; inline auto rep(int l, int r) { return std::views::iota(std::min(l, r), r); } inline auto rep(int n) { return rep(0, n); } inline auto rep1(int l, int r) { return rep(l, r + 1); } inline auto rep1(int n) { return rep(1, n + 1); } namespace ranges = std::ranges; namespace views = std::views; using i64 = std::int64_t; #endif // __INCLUDE_LEVEL__