Compilare: user.cpp: In function ‘void read(std::vector<int>&)’: user.cpp:35:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); ++i) ^ user.cpp: In function ‘std::tuple<std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> > > pana_unde(std::vector<int>&, std::vector<int>&, std::vector<int>&)’: user.cpp:46:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < all.size(); ++i) { ^ user.cpp:50:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < all.size(); ++i) { ^ user.cpp: In function ‘void cit(int&)’: user.cpp:14:59: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if (poz == Dim) fread(lin, 1, Dim, stdin), poz=0; ^ user.cpp:18:57: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if (poz == Dim) fread(lin, 1, Dim, stdin), poz=0; ^ user.cpp: In function ‘int main()’: user.cpp:83:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mediana.in", "r", stdin); ^ user.cpp:84:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mediana.out", "w", stdout); ^