View Compilation Error

0_0_19520005_16141.cpp: In function 'int main()':
0_0_19520005_16141.cpp:16:19: error: 'class std::vector<int>' has no member named 'pb'
 #define push_back pb
                   ^
0_0_19520005_16141.cpp:36:23: note: in expansion of macro 'push_back'
                     l.push_back(pos);
                       ^
0_0_19520005_16141.cpp:16:19: error: 'class std::vector<int>' has no member named 'pb'
 #define push_back pb
                   ^
0_0_19520005_16141.cpp:41:23: note: in expansion of macro 'push_back'
                     r.push_back(dis);
                       ^