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71 lines (61 loc) · 1.83 KB
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package baekjoon;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;
public class Main_1759 {
static int l;
static int c;
static char[] arr;
static boolean[] visited;
static char[] answer;
static StringBuilder sb = new StringBuilder();
public static boolean isValid() {
int mo = 0;
int ja = 0;
for (char character : answer) {
if (character == 'a' || character == 'e' || character == 'i' || character == 'o' || character == 'u') {
mo++;
} else {
ja++;
}
}
if (mo > 0 && ja > 1) {
return true;
}
return false;
}
public static void dfs(int level, int depth) {
if (level == l) {
if (isValid()) {
sb.append(answer);
sb.append("\n");
}
} else {
for (int i = depth; i < c; i++) {
if(!visited[i]) {
answer[level] = arr[i];
visited[i] = true;
dfs(level + 1, i + 1);
visited[i] = false;
}
}
}
}
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer(br.readLine());
l = Integer.parseInt(st.nextToken());
c = Integer.parseInt(st.nextToken());
visited = new boolean[c];
answer = new char[l];
arr = new char[c];
st = new StringTokenizer(br.readLine());
for (int i = 0; i < c; i++) {
arr[i] = st.nextToken().charAt(0);
}
Arrays.sort(arr);
dfs(0, 0);
System.out.println(sb);
}
}