View Compilation Error

0_0_39643606_8217.cpp:12:6: error: variable or field 'insert' declared void
   12 | void insert(string &s, int le) {
      |      ^~~~~~
0_0_39643606_8217.cpp:12:13: error: 'string' was not declared in this scope
   12 | void insert(string &s, int le) {
      |             ^~~~~~
0_0_39643606_8217.cpp:12:21: error: 's' was not declared in this scope
   12 | void insert(string &s, int le) {
      |                     ^
0_0_39643606_8217.cpp:12:24: error: expected primary-expression before 'int'
   12 | void insert(string &s, int le) {
      |                        ^~~
0_0_39643606_8217.cpp: In function 'void build()':
0_0_39643606_8217.cpp:26:5: error: 'queue' was not declared in this scope
   26 |     queue<int> q;
      |     ^~~~~
0_0_39643606_8217.cpp:26:11: error: expected primary-expression before 'int'
   26 |     queue<int> q;
      |           ^~~
0_0_39643606_8217.cpp:30:13: error: 'q' was not declared in this scope
   30 |             q.push(ch[0][i]);
      |             ^
0_0_39643606_8217.cpp:33:13: error: 'q' was not declared in this scope
   33 |     while (!q.empty()) {
      |             ^