Compilare: user.cpp: In function ‘bool exista_subsecv_suma_pozitiva(const std::vector<double>&, int, int)’: user.cpp:42:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = c; i < s_part.size(); ++i){ ^ user.cpp: In function ‘bool exista_submat_suma_pozitiva(const std::vector<std::vector<double> >&, int, int, int, int)’: user.cpp:52:26: warning: unused variable ‘m’ [-Wunused-variable] const int n = v.size(), m = v.front().size(); ^ user.cpp: In function ‘bool check(const std::vector<std::vector<int> >&, double, int, int, int, int)’: user.cpp:70:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < mat.size(); ++i){ ^ user.cpp:71:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < mat[i].size(); ++j){ ^