Compilare: user.cpp: In function ‘bool ExistaCiclu(Graf&, long long int)’: user.cpp:18:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < g.size() - 1; ++i) ^ user.cpp: In function ‘int main()’: user.cpp:50:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &m); ^ user.cpp:56:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &x, &y, &c); ^