View Compilation Error

0_0_30561865_13459.cpp: In lambda function:
0_0_30561865_13459.cpp:69:52: error: expected '}' at end of input
     sort(pos+1,pos+n,[&](const int& i,const int& j){
                                                    ^
0_0_30561865_13459.cpp: In function 'void Convex(node*, int&)':
0_0_30561865_13459.cpp:69:52: error: expected ')' at end of input
0_0_30561865_13459.cpp:69:52: error: expected '}' at end of input