codeforces专项

 1 #include <iostream>
 2 #include <string>
 3 #include <algorithm>
 4 #include <vector>
 5 #include <map>
 6 #include <set>
 7 #include <cstdio>
 8 #include <cstdlib>
 9 #include <cstring>
10 
11 using namespace std;
12 
13 char ch[10][10];
14 
15 int main()
16 {
17     for (int i = 0; i < 8; ++i)
18         scanf("%s", ch[i]);
19     int a = 10, b = 10;
20     for (int i = 0; i < 8; ++i)
21     {
22         for (int j = 0; j < 8; ++j)
23         {
24             if (ch[i][j] != ‘.‘)
25             {
26                 if (ch[i][j] == ‘B‘)
27                 {
28                     int cnt = 0;
29                     int k;
30                     for (k = i+1; k < 8; ++k)
31                     {
32                         if (ch[k][j] != ‘B‘ && ch[k][j] != ‘W‘) cnt++;
33                         else break;
34                     }
35                     if (k == 8) b = min(b, cnt);
36                 }
37                 if (ch[i][j] == ‘W‘)
38                 {
39                     int cnt = 0;
40                     int k;
41                     for (k = i-1; k >= 0; --k)
42                     {
43                         if (ch[k][j] != ‘B‘ && ch[k][j] != ‘W‘) cnt++;
44                         else break;    
45                     }    
46                     if (k < 0) a = min(a, cnt);
47                 }
48             }
49         }
50     }
51     puts(a > b ? "B" : "A");
52         
53     return 0;
54 }