View Compilation Error

0_0_36369865_14604.cpp:36:38: error: macro "MEM" passed 3 arguments, but takes just 2
    MEM(trie[tot], 0, sizeof trie[tot]);
                                      ^
0_0_36369865_14604.cpp: In function 'void insert_(int, int)':
0_0_36369865_14604.cpp:36:4: error: 'MEM' was not declared in this scope
    MEM(trie[tot], 0, sizeof trie[tot]);
    ^