Compilare: user.cpp: In function ‘int New_Stare(int, std::vector<short int>)’: user.cpp:25:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Val.size(); ++ i) ^ user.cpp: In function ‘int main()’: user.cpp:50:33: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] for(int i = 0; i <= (1 << n + 1); ++ i){ ^ user.cpp:85:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Sol.size(); ++ i) ^