Eroare de compilare: main.cpp: In function 'int main()': main.cpp:12:5: error: 'cin' was not declared in this scope 12 | cin>>n; | ^~~ main.cpp:3:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'? 2 | #include <vector> +++ |+#include <iostream> 3 | //#pragma GCC optimize ("O3") main.cpp:17:9: error: 'arr' was not declared in this scope 17 | arr.insert(arr.begin() + a-1, i); | ^~~ main.cpp:21:9: error: 'cout' was not declared in this scope 21 | cout<<arr[i] +1<<'\n'; | ^~~~ main.cpp:21:9: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'? main.cpp:21:15: error: 'arr' was not declared in this scope 21 | cout<<arr[i] +1<<'\n'; | ^~~ Non zero exit status: 1