View Compilation Error

0_0_30528873_17151.cpp: In function 'bool judge()':
0_0_30528873_17151.cpp:33:5: error: 'queue' was not declared in this scope
     queue<int>q;
     ^
0_0_30528873_17151.cpp:33:11: error: expected primary-expression before 'int'
     queue<int>q;
           ^
0_0_30528873_17151.cpp:37:13: error: 'q' was not declared in this scope
             q.push(i);
             ^
0_0_30528873_17151.cpp:41:12: error: 'q' was not declared in this scope
     while(!q.empty())
            ^