View Compilation Error

0_0_29677806_3188.cpp: In function 'int main()':
0_0_29677806_3188.cpp:6:6: error: 'cin' was not declared in this scope
      cin>>t;
      ^
0_0_29677806_3188.cpp:20:2: error: 'cout' was not declared in this scope
  cout<<"YES"<<endl;
  ^
0_0_29677806_3188.cpp:20:15: error: 'endl' was not declared in this scope
  cout<<"YES"<<endl;
               ^
0_0_29677806_3188.cpp:22:2: error: 'cout' was not declared in this scope
  cout<<"NO"<<endl;
  ^
0_0_29677806_3188.cpp:22:14: error: 'endl' was not declared in this scope
  cout<<"NO"<<endl;
              ^