View Compilation Error

0_0_36913538_32647.cpp: In function 'int main()':
0_0_36913538_32647.cpp:58:48: error: 'cout' was not declared in this scope
                     if(tem == h1[mod].begin()) cout << -1 << '\n';
                                                ^
0_0_36913538_32647.cpp:71:46: error: 'cout' was not declared in this scope
                     if(tem == h1[mod].end()) cout << -1 << '\n';
                                              ^