import sys n = sys.stdin.readline().strip().split() a = [x for x in map(int,sys.stdin.read().strip().split())] a = set(a) a = list(a) a.sort() for i in a: print(i,end="\n")
import sys n = sys.stdin.readline().strip().split() a = [x for x in map(int,sys.stdin.read().strip().split())] a = set(a) a = list(a) a.sort() for i in a: print(i,end="\n")