View Compilation Error

0_0_36271762_29421.cpp:30:16: error: expected ']' before ',' token
 int tag[MAXNODE,m;
                ^
0_0_36271762_29421.cpp: In function 'void build(int, int, int, int)':
0_0_36271762_29421.cpp:35:5: error: 'tag' was not declared in this scope
     tag[rt] = 1;//标记rt已被选择 
     ^
0_0_36271762_29421.cpp: In function 'void query(node, int, int)':
0_0_36271762_29421.cpp:45:8: error: 'tag' was not declared in this scope
     if(tag[rt] == 0) return;//不存在该节点 
        ^