Compilare: user.cpp: In function ‘void seg_tree_build(const int&, const int&, const int&)’: user.cpp:30:30: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] const int &middle = left + right >> 1; ^ user.cpp: In function ‘void seg_tree_query_min_max(const int&, const int&, const int&, std::pair<int, int>&)’: user.cpp:45:30: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] const int &middle = left + right >> 1; ^ user.cpp: In function ‘void seg_tree_query_min(const int&, const int&, const int&, int)’: user.cpp:59:30: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] const int &middle = left + right >> 1; ^ user.cpp: In function ‘void seg_tree_query_max(const int&, const int&, const int&, int)’: user.cpp:73:30: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] const int &middle = left + right >> 1; ^ user.cpp: In function ‘int main()’: user.cpp:83:18: warning: variable ‘g’ set but not used [-Wunused-but-set-variable] int N, M, f, g; ^