View Compilation Error

0_0_21691369_1737.cpp: In function 'int main()':
0_0_21691369_1737.cpp:17:3: error: expected ';' before 'std'
   std::cin>>pack;
   ^
0_0_21691369_1737.cpp:42:27: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   pack-=array[pack]<<std::endl;
                           ^