#pragma GCC optimize("O3") #include using namespace std; #define rep(i, a, n) for (int i = a; i < (int)(n); i++) using ll = long long; int main() { int h, w; cin >> h >> w; vector grid(h); rep(i, 0, h) cin >> grid[i]; string iwi1 = "yiwiy9", iwi2 = "9yiwiy"; rep(i, 0, h) { int j = 0; while (j + 5 < w) { if (grid[i].substr(j, 6) == iwi1) { grid[i][j + 4] = 'Y'; j += 6; } else if (grid[i].substr(j, 6) == iwi2) { grid[i][j + 1] = 'Y'; j += 6; } else { j++; } } } rep(i, 0, h) cout << grid[i] << endl; }