Compilare: user.cpp: In function ‘int mf::bfs(int, int)’: user.cpp:27:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < G[nod].size(); ++j) { ^ user.cpp: In function ‘int mf::max_flow(int, int)’: user.cpp:40:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[sink].size(); ++i) { ^ user.cpp: In function ‘void mf::adapt()’: user.cpp:86:9: warning: unused variable ‘v’ [-Wunused-variable] int v[10000000]; ^ user.cpp: In function ‘int main()’: user.cpp:69:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("joc4.in", "r", stdin); ^ user.cpp:70:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("joc4.out", "w", stdout); ^ user.cpp:72:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &N, &M, &A, &B); ^ user.cpp:74:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &E[i][0], &E[i][1]); ^