UVa 1610 聚会游戏

 1 #include<string>
 2 #include<iostream>  
 3 #include<algorithm>
 4 using namespace std;
 5 
 6 const int maxn = 1000 + 5;
 7 
 8 string str[maxn];
 9 
10 int main()
11 {
12     //freopen("D:\\txt.txt", "r", stdin);
13     int n;
14     while (cin >> n && n)
15     {
16         for (int i = 0; i < n; i++)
17             cin >> str[i];
18         sort(str, str + n);
19         int x = n / 2 - 1;
20         int y = n / 2;
21         string ans = "";
22         string cmp = "";
23         int ok = 0;
24         int k = 0;
25         while (true)
26         {
27             for (char i = ‘A‘; i <= ‘Z‘; i++)
28             {
29                 cmp = ans + i;
30                 if (str[x] <= cmp && str[y] > cmp)
31                 {
32                     cout << cmp << endl;
33                     ok = 1;
34                     break;
35                 }
36 
37             }
38             if (ok) break;
39             ans = ans + str[x][k++];
40         }
41     }
42     return 0; 
43 }