View Compilation Error

0_0_31250069_19114.cpp: In function 'int main()':
0_0_31250069_19114.cpp:6:12: error: 'class std::vector<int>' has no member named 'push_bacj'
 #define pb push_bacj
            ^
0_0_31250069_19114.cpp:72:12: note: in expansion of macro 'pb'
     adj[i].pb(j);
            ^