View Compilation Error

0_0_38539190_12047.cpp: In function 'int main()':
0_0_38539190_12047.cpp:35:9: error: 'function' was not declared in this scope
         function<void(int,int)>dfs=[&](int le,int re)->void{
         ^
0_0_38539190_12047.cpp:35:30: error: expression list treated as compound expression in functional cast [-fpermissive]
         function<void(int,int)>dfs=[&](int le,int re)->void{
                              ^
0_0_38539190_12047.cpp:35:18: error: expected primary-expression before 'void'
         function<void(int,int)>dfs=[&](int le,int re)->void{
                  ^
0_0_38539190_12047.cpp:79:26: error: 'dfs' was not declared in this scope
                 dfs(xx,-1);
                          ^