View Compilation Error

0_0_36747193_10867.cpp: In function 'int main()':
0_0_36747193_10867.cpp:117:29: error: 'class std::queue<std::pair<int, int> >' has no member named 'top'
     printf("C %d %d\n",ans3.top().first,ans3.top().second);
                             ^
0_0_36747193_10867.cpp:117:46: error: 'class std::queue<std::pair<int, int> >' has no member named 'top'
     printf("C %d %d\n",ans3.top().first,ans3.top().second);
                                              ^