View Compilation Error

0_0_39873856_1943.cpp: In function 'void del(std::string)':
0_0_39873856_1943.cpp:36:23: error: invalid types 'int [4000010][int [4000010][35]]' for array subscript
   36 |                 if(sum[trie][id]<=0)trie[root][id]=0;
      |                       ^