Compilare: main.cpp: In function 'bool BF()': main.cpp:26:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < G[nod].size(); j++) { // pentru fiecare vecin al nodului ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:42:38: 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); freopen("maxflow.out", "w", stdout); ^ main.cpp:42:76: 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); freopen("maxflow.out", "w", stdout); ^ main.cpp:43:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d ", &N, &M); ^ main.cpp:45:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d ", &x, &y, &z); ^