View Compilation Error

0_0_38539074_5391.cpp: In function 'int main()':
0_0_38539074_5391.cpp:35:9: error: 'function' was not declared in this scope
         function<void(int)>dfs=[&](int le)->void{
         ^
0_0_38539074_5391.cpp:35:18: error: expected primary-expression before 'void'
         function<void(int)>dfs=[&](int le)->void{
                  ^
0_0_38539074_5391.cpp:74:23: error: 'dfs' was not declared in this scope
                 dfs(xx);
                       ^