Compilare: user.cpp: In function ‘int dfs(int, int)’: user.cpp:57:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(; ptr[v] < adj[v].size(); ++ptr[v]) ^ user.cpp: In function ‘int getFlow()’: user.cpp:83:34: warning: suggest parentheses around assignment used as truth value [-Wparentheses] while(augFlow = dfs(source, INF)) flow += augFlow; ^ user.cpp: In function ‘int main()’: user.cpp:91:35: 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:92:37: 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); ^