[SWEA] 문제 제목 붙이기

 

 

[문제]

https://swexpertacademy.com/main/code/problem/problemDetail.do?contestProbId=AWkIdD46A5EDFAXC

SW Expert Academy

 

 

 

[소스 코드]

import java.io.*;
import java.util.*;
public class Solution {
	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int T = Integer.parseInt(br.readLine());
		for(int tc=1;tc<=T;tc++) {
			int n = Integer.parseInt(br.readLine());
			HashSet<Character> hs = new HashSet<>();
			for(int i=0;i<n;i++) {
				char c = br.readLine().charAt(0);
				hs.add(c);
			}
			int result = 0;
			for(int i=0;i<26;i++) {
				if(hs.contains((char)('A'+i))) result++;
				else break;
			}
			System.out.println("#"+tc+" "+result);
		}
	}
}