密码（Password） 

 1 #include<cstdio>
 2 #include<cstring>
 3 using namespace std;
 4 int k, cnt;
 5 char G[2][6][5], ans[6];
 6 bool dfs(int col){
 7     if (col == 5){
 8         if (++cnt == k){
 9             ans[col] = '\0';
10             printf("%s\n", ans);
11             return true;
12         }
13         return false;
14     }
15 
16     bool vis[2][26];
17     memset(vis, false, sizeof(vis));
18     for (int i = 0; i<2; i++)
19     for (int j = 0; j<6; j++)
20         vis[i][G[i][j][col] - 'A'] = 1;
21     for (int i = 0; i<26; i++)
22     if (vis[0][i] && vis[1][i]){
23         ans[col] = i + 'A';
24         if (dfs(col + 1)) return true;
25     }
26 
27     return false;
28 }
29 int main()
30 {
31     /*
32     freopen("in.txt", "r", stdin);
33     freopen("out.txt", "w", stdout);
34     */
35     int T;
36     scanf("%d", &T);
37     while (T--){
38         scanf("%d", &k);
39         for (int i = 0; i<2; i++)
40         for (int j = 0; j<6; j++)
41             scanf("%s", G[i][j]);
42 
43         cnt = 0;
44         if (!dfs(0)) puts("NO");
45     }
46     /*
47     fclose(stdin);
48     fclose(stdout);
49     */
50     return 0;
51 }

 

posted @ 2017-10-20 21:04  ouyang_wsgwz  阅读(798)  评论(0)    收藏  举报