/in/foo.cc: In function 'int main()':
/in/foo.cc:100:24: warning: array subscript has type 'char' [-Wchar-subscripts]
    if (Mapper[str[i][j]] == 0)
                        ^
/in/foo.cc:102:21: warning: array subscript has type 'char' [-Wchar-subscripts]
     Mapper[str[i][j]] = ++idcnt;
                     ^
/in/foo.cc:109:22: warning: array subscript has type 'char' [-Wchar-subscripts]
   if (!book[str[0][j]])
                      ^
/in/foo.cc:111:18: warning: array subscript has type 'char' [-Wchar-subscripts]
    book[str[0][j]] = true;
                  ^
/in/foo.cc:114:29: warning: array subscript has type 'char' [-Wchar-subscripts]
     int u = Mapper[str[0][j]];
                             ^
/in/foo.cc:115:29: warning: array subscript has type 'char' [-Wchar-subscripts]
     int v = Mapper[str[1][j]];
                             ^
/in/foo.cc:120:35: warning: array subscript has type 'char' [-Wchar-subscripts]
      int v2 = Mapper[str[0][j + 2]];
                                   ^
/in/foo.cc:127:26: warning: array subscript has type 'char' [-Wchar-subscripts]
     Kind[Mapper[str[0][j]]] = 1;
                          ^
/in/foo.cc:130:30: warning: array subscript has type 'char' [-Wchar-subscripts]
      int u = Mapper[str[0][j]];
                              ^
/in/foo.cc:131:34: warning: array subscript has type 'char' [-Wchar-subscripts]
      int v = Mapper[str[0][j + 1]];
                                  ^
/in/foo.cc:132:35: warning: array subscript has type 'char' [-Wchar-subscripts]
      int v2 = Mapper[str[1][j + 1]];
                                   ^