Compilare: user.cpp: In function ‘bool bfs()’: user.cpp:40:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < graph[nod].size(); i++) ^ user.cpp: In function ‘int edmondsKarp()’: user.cpp:65:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < graph[n].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:100:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("maxflow.in", "r", stdin); ^ user.cpp:101:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("maxflow.out", "w", stdout); ^ user.cpp:102:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:108:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &x, &y, &z); ^