Compilare: user.cpp: In function ‘bool BellmanFord(int, int)’: user.cpp:31:9: warning: unused variable ‘i’ [-Wunused-variable] int i, j; ^ user.cpp:31:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp: In function ‘int main()’: user.cpp:59:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmcm.in", "r", stdin); ^ user.cpp:60:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmcm.out", "w", stdout); ^ user.cpp:61:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmcm.err", "w", stderr); ^ user.cpp:91:15: warning: ‘current’ may be used uninitialized in this function [-Wmaybe-uninitialized] int flow, current, cost = 0; ^