View Compilation Error

0_0_29355594_9894.cpp:19:1: error: 'queue' does not name a type
 queue<int> v;//储存海边的城镇节点
 ^
0_0_29355594_9894.cpp: In function 'int main()':
0_0_29355594_9894.cpp:32:16: error: 'v' was not declared in this scope
       if(r==1) v.push(i);
                ^
0_0_29355594_9894.cpp:50:12: error: 'v' was not declared in this scope
     while(!v.empty())
            ^