Compilare: user.cpp: In function ‘void BFS(int)’: user.cpp:31:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<graph[now].size(); i++){ ^ user.cpp: In function ‘int main()’: user.cpp:43:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d", &n, &m, &s); ^ user.cpp:46:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &nod, &vecin); ^