Compilare: main.cpp: In function 'void radix_offset(std::vector<int>&, int)': main.cpp:15:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int l = 0; l < buckets[j].size(); l++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:46:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (auto i = 0; i < v.size(); i+=10) ~~^~~~~~~~~~ main.cpp:37:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("radixsort.in", "r", stdin); ^ main.cpp:38:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("radixsort.out", "w", stdout); ^