Compilare: user.cpp: In function ‘std::pair<int, int> query(int, int, int, int, int)’: user.cpp:77:21: warning: variable ‘q1’ set but not used [-Wunused-but-set-variable] pair <int, int> q1 = query (a, (a + b)/2, i, j, 2 * node); ^ user.cpp:78:21: warning: variable ‘q2’ set but not used [-Wunused-but-set-variable] pair <int, int> q2 = query (1 + (a + b)/2, b, i, j, 2 * node + 1); ^