Eroare de compilare: main.cpp: In function 'int main()': main.cpp:27:5: error: 'cin' was not declared in this scope 27 | cin>>t; | ^~~ main.cpp:2:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'? 1 | #include <fstream> +++ |+#include <iostream> 2 | main.cpp:33:13: error: 'cout' was not declared in this scope 33 | cout<<lgpow(2,n); | ^~~~ main.cpp:33:13: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'? main.cpp:35:13: error: 'cout' was not declared in this scope 35 | cout<<(n*lgpow(2,n-1))%MOD; | ^~~~ main.cpp:35:13: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'? main.cpp:37:13: error: 'cout' was not declared in this scope 37 | cout<<1; | ^~~~ main.cpp:37:13: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'? main.cpp:39:13: error: 'cout' was not declared in this scope 39 | cout<<0; | ^~~~ main.cpp:39:13: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'? main.cpp:41:13: error: 'cout' was not declared in this scope 41 | cout<<1; | ^~~~ main.cpp:41:13: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'? main.cpp:43:13: error: 'cout' was not declared in this scope 43 | cout<<(n*(n+1)*lgpow(2,n-2))%MOD; | ^~~~ main.cpp:43:13: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'? main.cpp:44:9: error: 'cout' was not declared in this scope 44 | cout<<'\n'; | ^~~~ main.cpp:44:9: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'? Non zero exit status: 1