/in/Main.java:1: error: class, interface, or enum expected
public static void main(String[] args) throws IOException{
              ^
/in/Main.java:3: error: class, interface, or enum expected
        int total = sc.nextInt();
        ^
/in/Main.java:4: error: class, interface, or enum expected
        Map<Integer, Set<Integer>> countMap = new HashMap<>();
        ^
/in/Main.java:5: error: class, interface, or enum expected
        for(int i = 0; i < total; i ++) {
        ^
/in/Main.java:5: error: class, interface, or enum expected
        for(int i = 0; i < total; i ++) {
                       ^
/in/Main.java:5: error: class, interface, or enum expected
        for(int i = 0; i < total; i ++) {
                                  ^
/in/Main.java:7: error: class, interface, or enum expected
            Integer sonName = sc.nextInt();
            ^
/in/Main.java:8: error: class, interface, or enum expected
            Set<Integer> count = countMap.getOrDefault(name, new HashSet<>());
            ^
/in/Main.java:9: error: class, interface, or enum expected
            count.add(sonName);
            ^
/in/Main.java:10: error: class, interface, or enum expected
            countMap.put(name, count);
            ^
/in/Main.java:11: error: class, interface, or enum expected
        }
        ^
/in/Main.java:16: error: class, interface, or enum expected
    }
    ^
12 errors