Code error

Question

import java.util.Arrays;

import java.util.Scanner ;
public class Program
{
public static void main(String[] args) {
Scanner input= new Scanner(System .in);

String MyName=input.nextLine();
int number_of_agent=input.nextInt();
String[] other_customary=(input.nextLine()).split(" ");
int turn=1;
Arrays.sort(other_customary);
for(int x=0;x<4;x++){
if( MyName.compareTo(other_customary[x])==-1){
turn+=x;
break;
}
}
if(MyName.compareTo(other_customary[3])==1){
turn=5;
}
int devide=turn/number_of_agent;
int modulus=turn%number_of_agent;
if(modulus==0){
System.out.print((devide)*20);
}
else{
System.out.print((devide+1)*20);
}

}
}
I dont know what is problem in my code.i am solving "new driver's license" question in sololearn.