import java.util.*; public class Main { static char up(char x) { if ('a' <= x && x <= 'z') return (char) ((int) x - 32); return x; } static String re(String name) { String[] a = name.split("[' ']+"); String r = ""; for (int i = 0; i < a.length; i++) { if (a[i].length() == 0) continue; String s = Character.toString(up(a[i].charAt(0))) + a[i].substring(1); r += s + " "; } return r; } static class student { String code, name, method, mail; public student(String c, String n, String m, String em) { code = c; name = n; method = m; mail = em; } public boolean big(student b) { if (code.compareTo(b.code) > 0) return true; return false; } public String toString() { return code + " " + name + ' ' + method + " " + mail; } } public static void main(String[] args) { Scanner sc = new Scanner(System.in); ArrayList a = new ArrayList<>(); int n = sc.nextInt(); sc.nextLine(); for(int i=0;i0){ String cl = sc.next(); System.out.printf("DANH SACH SINH VIEN LOP %s:\n", cl); a.forEach(e -> { if(e.method.compareTo(cl) == 0) System.out.println(e); }); } } }