package main import ( "fmt" "strconv" "strings" ) func main() { var mask, ip1, ip2 string fmt.Scanf("%s\n%s\n%s", &mask, &ip1, &ip2) masks := strings.SplitN(mask, ".", -1) ip1s := strings.SplitN(ip1, ".", -1) ip2s := strings.SplitN(ip2, ".", -1) if len(ip1s) != 4 || len(ip2s) != 4 || len(masks) != 4...