Compilare: user.c:2:12: warning: conflicting types for built-in function ‘log2’ [enabled by default] inline int log2(int x){ ^ user.c: In function ‘main’: user.c:12:21: warning: unused variable ‘ans’ [-Wunused-variable] int T, t, n, k, ans; ^ user.c:16:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &T); ^ user.c:18:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &k); ^