View Compilation Error

0_0_15140865_2483.cpp: In member function 'int SYC::Query(int, int)':
0_0_15140865_2483.cpp:30:32: error: 'class std::map<int, bool>' has no member named 'End'
   if (ans1[x].find(y)!=ans1[x].End()) return ans1[x][y];
                                ^
0_0_15140865_2483.cpp: In member function 'int HHD::Query(int, int)':
0_0_15140865_2483.cpp:56:33: error: 'class std::map<int, bool>' has no member named 'End'
    if (ans2[x].find(y)!=ans2[x].End()) return ans2[x][y];
                                 ^