Compilare: user.cpp: In function ‘int main()’: user.cpp:34:16: warning: unused variable ‘x’ [-Wunused-variable] int n = 0, q, x, y, i, j, nr = 1, k, res; ^ user.cpp:34:19: warning: unused variable ‘y’ [-Wunused-variable] int n = 0, q, x, y, i, j, nr = 1, k, res; ^ user.cpp:37:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &q); ^ user.cpp:39:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &A[n][0], &A[n][1]); ^