public class HelloWorld{
public static void main(String []args){
System.out.println(calc(3, 1, 8));
System.out.println(calc(3, 1, 9));
System.out.println(calc(3, 2, 10));
}
public static boolean calc(int small, int big, int len){
int xxx = len / 5;
int yyy = len % 5;
return xxx <= big && yyy <= small;
}
}String str = "1233\n2345\n3467\n5677";
String[] arr= str.split("\n");
System.out.println(Arrays.toString(arr));char[] charArray = str.toCharArray();