Compilare: user.cpp: In function ‘void bfs()’: user.cpp:48:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < vecin[nod].size(); ++i){ ^ user.cpp: In function ‘void read()’: user.cpp:24:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("camionas.in", "r", stdin); ^ user.cpp:26:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &n, &m, &gCam); ^ user.cpp:29:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &x.node, &y, &x.weight); ^ user.cpp: In function ‘void bfs()’: user.cpp:59:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("camionas.out", "w", stdout); ^