View Compilation Error

0_0_32999685_19963.cpp: In function 'int main()':
0_0_32999685_19963.cpp:25:11: error: 'cin' was not declared in this scope
     while(cin>>s){
           ^
0_0_32999685_19963.cpp:29:17: error: 'cout' was not declared in this scope
                 cout<<"Yes."<<endl;
                 ^
0_0_32999685_19963.cpp:29:31: error: 'endl' was not declared in this scope
                 cout<<"Yes."<<endl;
                               ^
0_0_32999685_19963.cpp:30:18: error: 'cout' was not declared in this scope
             else cout<<"No."<<endl;
                  ^
0_0_32999685_19963.cpp:30:31: error: 'endl' was not declared in this scope
             else cout<<"No."<<endl;
                               ^