View Compilation Error

0_0_36276529_18738.cpp: In function 'void bfs(node)':
0_0_36276529_18738.cpp:8:2: error: 'queue' was not declared in this scope
  queue<node>q;
  ^
0_0_36276529_18738.cpp:8:12: error: expected primary-expression before '>' token
  queue<node>q;
            ^
0_0_36276529_18738.cpp:8:13: error: 'q' was not declared in this scope
  queue<node>q;
             ^
0_0_36276529_18738.cpp:15:11: error: 'm' was not declared in this scope
    if(ax<=m&&ax>0&&ay<=m&&ay>0){
           ^
0_0_36276529_18738.cpp:16:12: error: 'x' was not declared in this scope
     if(dis[x][y]>dis[ax][ay]+a[x][y])//存疑 
            ^
0_0_36276529_18738.cpp:16:15: error: 'y' was not declared in this scope
     if(dis[x][y]>dis[ax][ay]+a[x][y])//存疑 
               ^