Eroare de compilare: user.cpp: In function ‘bool check(int, int)’: user.cpp:9:8: error: ‘sol’ was not declared in this scope if (sol[i] > sol[j]) ^ user.cpp:18:3: error: ‘cout’ was not declared in this scope cout << n << " " << k; ^ user.cpp: In function ‘int main()’: user.cpp:57:7: warning: unused variable ‘once’ [-Wunused-variable] bool once = true; ^ user.cpp:75:28: warning: unused variable ‘endIndex’ [-Wunused-variable] long long startIndex = 1, endIndex = N; ^