View Compilation Error

0_0_37777556_13890.cpp: In function 'int main()':
0_0_37777556_13890.cpp:6:11: error: 'cin' was not declared in this scope
     int n;cin>>n;
           ^
0_0_37777556_13890.cpp:7:5: error: 'cout' was not declared in this scope
     cout<<"No"<<endl;
     ^
0_0_37777556_13890.cpp:7:17: error: 'endl' was not declared in this scope
     cout<<"No"<<endl;
                 ^