Compilare: user.cpp: In function ‘int main()’: user.cpp:27:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 1; j < min(i + 1, LOG); ++j) { ^ user.cpp:33:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i < min(n + 1, LOG); ++i) ^ user.cpp:21:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%llu", &n); ^ user.cpp:23:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%llu%llu", &a, &b); ^