View Compilation Error

0_0_29617885_18171.cpp: In function 'int main()':
0_0_29617885_18171.cpp:9:6: error: 'cin' was not declared in this scope
      cin >> n;
      ^
0_0_29617885_18171.cpp:34:5: error: 'cout' was not declared in this scope
     cout<<firstteam<<" "<<firstsub<< " " << firsttime << endl;
     ^
0_0_29617885_18171.cpp:34:58: error: 'endl' was not declared in this scope
     cout<<firstteam<<" "<<firstsub<< " " << firsttime << endl;
                                                          ^