Compilare: user.cpp: In function ‘long long int findBestNumber(long long int, std::vector<std::vector<long long int> >, int)’: user.cpp:86:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (numberOfDivisors.size() <= divisorsNumber) { ^ user.cpp: In function ‘int main()’: user.cpp:55:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(input,"%d",&numberOfTests); ^ user.cpp:72:64: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(input,"%lld %d", &upperBound, &numberOfDivisors); ^