package main import ( "bufio" "fmt" "os" ) func main() { buf := bufio.NewReader(os.Stdin) var n, m int fmt.Fscan(buf, &n, &m) sli := make([]string, n) for i := 0; i < n; i++ { fmt.Fscan(buf, &sli[i]) } addx := [4]int{0, 0, 1, -1} addy := [4]int{1, -1, 0, ...