Compilare: user.cpp: In function ‘long long unsigned int DP(const long long unsigned int&)’: user.cpp:44:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(remainder >= k) ^ user.cpp: In function ‘int main()’: user.cpp:71:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("peluzanord.in", "r", stdin); ^ user.cpp:72:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("peluzanord.out", "w", stdout); ^