package main import ( "os" "strconv" "github.com/01-edu/z01" ) func printLine(str string) { for _, c := range str { z01.PrintRune(c) } z01.PrintRune('\n') } func solve(x, y int) { for i := 0; i < x; i++ { line := "" for j := 0; j < y; j++ { if (i%2 == 0) && (j%2 == 0) { line += "#" } else if (i%2 == 0) && (j%2 == 1) { line += " " } else if (i%2 == 1) && (j%2 == 1) { line += "#" } else { line += " " } } printLine(line) } } func main() { args := os.Args[1:] if len(args) != 2 { printLine("Error") return } x, _ := strconv.Atoi(args[1]) y, _ := strconv.Atoi(args[0]) if x <= 0 || y <= 0 { printLine("Error") return } solve(x, y) }