/in/foo.cc: In function 'int main()':
/in/foo.cc:27:17: warning: array subscript has type 'char' [-Wchar-subscripts]
         G[tmp[0]][tmp[1]] = G[tmp[1]][tmp[0]] = 1;
                 ^
/in/foo.cc:27:25: warning: array subscript has type 'char' [-Wchar-subscripts]
         G[tmp[0]][tmp[1]] = G[tmp[1]][tmp[0]] = 1;
                         ^
/in/foo.cc:27:37: warning: array subscript has type 'char' [-Wchar-subscripts]
         G[tmp[0]][tmp[1]] = G[tmp[1]][tmp[0]] = 1;
                                     ^
/in/foo.cc:27:45: warning: array subscript has type 'char' [-Wchar-subscripts]
         G[tmp[0]][tmp[1]] = G[tmp[1]][tmp[0]] = 1;
                                             ^
/in/foo.cc:28:19: warning: array subscript has type 'char' [-Wchar-subscripts]
         QWQ[tmp[0]][tmp[1]] = QWQ[tmp[1]][tmp[0]] = v;
                   ^
/in/foo.cc:28:27: warning: array subscript has type 'char' [-Wchar-subscripts]
         QWQ[tmp[0]][tmp[1]] = QWQ[tmp[1]][tmp[0]] = v;
                           ^
/in/foo.cc:28:41: warning: array subscript has type 'char' [-Wchar-subscripts]
         QWQ[tmp[0]][tmp[1]] = QWQ[tmp[1]][tmp[0]] = v;
                                         ^
/in/foo.cc:28:49: warning: array subscript has type 'char' [-Wchar-subscripts]
         QWQ[tmp[0]][tmp[1]] = QWQ[tmp[1]][tmp[0]] = v;
                                                 ^
/in/foo.cc:32:21: warning: array subscript has type 'char' [-Wchar-subscripts]
         depth[tmp[0]]++;
                     ^
/in/foo.cc:33:21: warning: array subscript has type 'char' [-Wchar-subscripts]
         depth[tmp[1]]++;
                     ^
/in/foo.cc:65:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < strlen(rb); i++)
                    ~~^~~~~~~~~~~~
/in/foo.cc:66:21: warning: array subscript has type 'char' [-Wchar-subscripts]
         if(QWQ[rb[i]][rb[i+1]])
                     ^
/in/foo.cc:66:30: warning: array subscript has type 'char' [-Wchar-subscripts]
         if(QWQ[rb[i]][rb[i+1]])
                              ^
/in/foo.cc:67:29: warning: array subscript has type 'char' [-Wchar-subscripts]
             sum += QWQ[rb[i]][rb[i+1]];
                             ^
/in/foo.cc:67:38: warning: array subscript has type 'char' [-Wchar-subscripts]
             sum += QWQ[rb[i]][rb[i+1]];
                                      ^