제출 #69012

실행 실패 (제출 코드 컴파일 에러)

Main.cpp: In function ‘int main()’:
Main.cpp:6:5: error: ‘cin’ was not declared in this scope; did you mean ‘std::cin’?
    6 |     cin >> a1 >> a0 >> c >> n0;
      |     ^~~
      |     std::cin
In file included from Main.cpp:1:
/usr/include/c++/11/iostream:60:18: note: ‘std::cin’ declared here
   60 |   extern istream cin;           /// Linked to standard input
      |                  ^~~
Main.cpp:9:9: error: ‘cout’ was not declared in this scope; did you mean ‘std::cout’?
    9 |         cout << 0;
      |         ^~~~
      |         std::cout
In file included from Main.cpp:1:
/usr/include/c++/11/iostream:61:18: note: ‘std::cout’ declared here
   61 |   extern ostream cout;          /// Linked to standard output
      |                  ^~~~
Main.cpp:12:5: error: ‘cout’ was not declared in this scope; did you mean ‘std::cout’?
   12 |     cout << (fn <= c * n0);
      |     ^~~~
      |     std::cout
In file included from Main.cpp:1:
/usr/include/c++/11/iostream:61:18: note: ‘std::cout’ declared here
   61 |   extern ostream cout;          /// Linked to standard output
      |                  ^~~~