foo.cc: In function ‘int main()’:
foo.cc:18:9: error: ‘cin’ was not declared in this scope; did you mean ‘std::cin’?
   18 |         cin>>a>>b;
      |         ^~~
      |         std::cin
iostream:62:18: note: ‘std::cin’ declared here
foo.cc:19:15: error: ‘pow’ was not declared in this scope
   19 |         ans=a*pow((1+b),3);
      |               ^~~

正在同步测试数据，请稍后