Compilare: main.cpp: In function 'int main()': main.cpp:87:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (poz + 1 < powers.size() && val_abs(powers[poz + 1] - x) < val_abs(sol - x)) ~~~~~~~~^~~~~~~~~~~~~~~ main.cpp:75:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%lld", &n, &m); ^ main.cpp:82:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lld", &x); ^