Eroare de compilare: user.cpp: In function ‘void make_sccs()’: user.cpp:58:30: error: ‘memset’ was not declared in this scope memset(used, 0, sizeof(used)); ^ user.cpp: In function ‘int main()’: user.cpp:116:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int id_scc = 0; id_scc < sccs.size(); ++id_scc) ^ user.cpp:79:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("2sat.in", "rt", stdin); ^ user.cpp:80:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("2sat.out", "w", stdout); ^