Eroare de compilare: main.cpp: In function 'int main()': main.cpp:74:9: error: 'cin' was not declared in this scope 74 | cin >> N; | ^~~ main.cpp:8:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'? 7 | #include <iomanip> +++ |+#include <iostream> 8 | main.cpp:98:17: error: 'cout' was not declared in this scope 98 | cout << fixed << setprecision(6) << total_cost << '\n'; | ^~~~ main.cpp:98:17: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'? Non zero exit status: 1