今日sb题之 sdnuoj 1064

 1 #include <iostream>
 2 #include <string>
 3 #include <stdio.h>
 4 #include <cmath>
 5 #include <algorithm>
 6 using namespace std;
 7
 8 bool judge(string &s)
 9 {
10     if ( abs (count(s.begin(),s.end(),'B') - (count(s.begin(), s.end(), 'G') ) == 1) || count(s.begin(), s.end(), 'B') == (count(s.begin(), s.end(), 'G')))
11         return true;
12     else
13         return false;
14 }
15
16
17 void printans(string &s)
18 {
19
20     if (count(s.begin(), s.end(), 'B') - count(s.begin(), s.end(), 'G') == 1)
21     {
22         int n = count(s.begin(), s.end(), 'B');
23         for (int i = 0; i < n-1; i++)
24             cout << "BG";
25         cout << "B" << endl;
26     }
27     if (count(s.begin(), s.end(), 'B') - count(s.begin(), s.end(), 'G') == -1)
28     {
29         int n = count(s.begin(), s.end(), 'G');
30         for (int i = 0; i < n-1 ; i++)
31             cout << "GB";
32         cout << "G" << endl;
33     }
34     if (count(s.begin(), s.end(), 'B') == count(s.begin(), s.end(), 'G'))
35     {
36         int n = count(s.begin(), s.end(), 'G');
37         for (int i = 0; i < n ; i++)
38             cout << "BG";
39         printf("\n");
40     }
41
42 }
43
44
45
46
47
48 int main()
49 {
50
51         string s;
52         while(cin >> s)
53         {
54             if (judge(s))
55                 printans(s);
56             else
57                 cout << "No" << endl;
58
59         }
60
61
62
63
64     return 0;
65 }

WA 了

我就是想复习复习string