View Compilation Error

0_0_16653461_7280.cpp: In function 'void print(int)':
0_0_16653461_7280.cpp:119:113: error: 'flag' was not declared in this scope
  printf("(节点%d)(左儿子%d)(右儿子%d)(权值%d)(子树大小%d)(延迟标记%lld)\n", x, ch[x][0], ch[x][1], v[x], sz[x], flag[x]);
                                                                                                                 ^
0_0_16653461_7280.cpp: In member function 'void Draw::draw(int, int, int)':
0_0_16653461_7280.cpp:209:24: error: 'flag' was not declared in this scope
   mp[dep][ln[dep]++] = flag[x] + 48;
                        ^