Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:70:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < gf[node].size(); ++i) { ^ user.cpp: In function ‘int main()’: user.cpp:124:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < edges.size(); ++i) { ^ user.cpp: In function ‘void citeste(int&)’: user.cpp:31:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, DIM, stdin), poz = 0; ^ user.cpp:37:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, DIM, stdin), poz = 0; ^ user.cpp: In function ‘int main()’: user.cpp:84:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tribes.in", "r", stdin); ^ user.cpp:85:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tribes.out", "w", stdout); ^