#include using namespace std; using ll = long long; using ull = unsigned long long; const int INF = (int)1e9 + 1001010; const ll llINF = (long long)4e18 + 22000020; const string endn = "\n"; template inline auto vector2(size_t i, size_t j, const T &init = T()) { return vector(i, vector(j, init)); } const string ELM_SEP = " ", VEC_SEP = endn; template istream &operator>>(istream &i, vector &A) { for(auto &I : A) i >> I; return i; } template ostream &operator<<(ostream &o, const vector &A) { int sz = A.size(); for(const auto &I : A) o << I << (--sz ? ELM_SEP : ""); return o; } template ostream &operator<<(ostream &o, const vector> &A) { int sz = A.size(); for(const auto &I : A) o << I << (--sz ? VEC_SEP : ""); return o; } template vector &operator++(vector &A, int) { for(auto &I : A) I++; return A; } template vector &operator--(vector &A, int) { for(auto &I : A) I--; return A; } template bool chmax(T &a, const U &b) { return ((a < b) ? (a = b, true) : false); } template bool chmin(T &a, const U &b) { return ((a > b) ? (a = b, true) : false); } ll floor_div(ll a, ll b) { if(b < 0) a = -a, b = -b; return (a >= 0) ? a / b : (a + 1) / b - 1; } ll ceil_div(ll a, ll b) { if(b < 0) a = -a, b = -b; return (a > 0) ? (a - 1) / b + 1 : a / b; } bool check_bit(ull val, ull digit) { return (val >> digit) & 1; } #ifdef DEBUG #include #define dump(...) cpp_dump(__VA_ARGS__) namespace cp = cpp_dump; struct InitCppDump { InitCppDump() { if(!isatty(fileno(stderr))) CPP_DUMP_SET_OPTION(es_style, cpp_dump::types::es_style_t::no_es); CPP_DUMP_SET_OPTION(log_label_func, cp::log_label::line()); CPP_DUMP_SET_OPTION(max_iteration_count, 30); } } init_cpp_dump; #else #define dump(...) #endif // ==================== ここまでテンプレ ==================== template vector z_algorithm(const Iterator begin, const Iterator end) { int n = end - begin; assert(n >= 0); vector ret(n, 0); ret[0] = n; for(int i = 1, j = 0; i < n;) { while(i + j < n && begin[i + j] == begin[j]) j++; ret[i] = j; if(j == 0) { i++; continue; } int k = 1; while(i + k < n && k + ret[k] < ret[i]) ret[i + k] = ret[k], k++; i += k; j -= k; } return ret; } vector z_algorithm(const string &s) { return z_algorithm(s.begin(), s.end()); } template vector z_algorithm(const vector &v) { return z_algorithm(v.begin(), v.end()); } namespace slephy { // O(max(|s|, |ret|)) [[nodiscard]] string replace(const string &s, const string &from, const string &to) { if(from.empty()) return s; vector z; { string tmp = from + char(128) + s; z = move(z_algorithm(tmp)); } string ret; int n = (int)s.size(), m = (int)from.size(); for(int i = 0; i < n;) { if(z[i + m + 1] >= m) { ret += to; i += m; } else { ret += s[i]; i++; } } return ret; } }; // namespace slephy int main(int argc, char *argv[]) { ios::sync_with_stdio(false); cin.tie(nullptr); ll h, w; cin >> h >> w; vector s(h); cin >> s; for(auto &si : s) { si = slephy::replace(si, "yiwiy9", "yiwiY9"); si = slephy::replace(si, "9yiwiy", "9Yiwiy"); cout << si << endl; } return 0; }