View Compilation Error

0_0_17321401_14437.cpp:1:15: error: 'q' was not declared in this scope
 int nownode = q.top();
               ^
0_0_17321401_14437.cpp:2:13: error: 'q' does not name a type
             q.pop();
             ^
0_0_17321401_14437.cpp:3:28: error: 'node' was not declared in this scope
             int& nowside = node[nownode];
                            ^
0_0_17321401_14437.cpp:4:13: error: expected unqualified-id before 'while'
             while (1)
             ^