해시, 문자열, 트라이 문제https://www.acmicpc.net/problem/5052💡 풀이코드 (성공)import sys t = int(sys.stdin.readline())for _ in range(t): n = int(sys.stdin.readline()) arr = [] for _ in range(n): num = str(sys.stdin.readline().strip()) # strip 추가하여 해결 arr.append(num) arr.sort() def sol(n, arr): phone_num = set() for num in arr: for i in range(len(num) - 1):..