[백준] 3052번 : 나머지 - Java(자바)

https://www.acmicpc.net/problem/3052

import java.util.*;
public class Main {
    public static void main(String args[]) {
        Scanner s=new Scanner(System.in);
        int num[]=new int[42];
        int count=0;
        for(int i=0;i<10;i++){
            int a=s.nextInt();
            num[a%42]++;
        }
        for(int i=0;i<42;i++){
            if(num[i]>0) count++;
        }
        System.out.print(count);
    }
}