package main import ( "os" "github.com/01-edu/z01" ) func solve(str string) bool { x := 0 y := 0 for _, c := range str { if c == 'L' { x-- } else if c == 'R' { x++ } else if c == 'U' { y++ } else if c == 'D' { y-- } } if x == 0 && y == 0 { return true } return false } func print(str string) { for _, v := range str { z01.PrintRune(v) } } func main() { args := os.Args[1:] if len(args) != 1 { z01.PrintRune('\n') return } result := solve(args[0]) if result { print("true\n") } else { print("false\n") } }