Compilare: user.cpp: In function ‘int main()’: user.cpp:31:15: warning: unused variable ‘l’ [-Wunused-variable] int n, m, i, l, r, mid; ^ user.cpp:31:18: warning: unused variable ‘r’ [-Wunused-variable] int n, m, i, l, r, mid; ^ user.cpp:31:21: warning: unused variable ‘mid’ [-Wunused-variable] int n, m, i, l, r, mid; ^ user.cpp:33:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:35:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^ user.cpp:38:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &q[i]); ^