Compilare: main.cpp: In function 'int dfs(int, int)': main.cpp:64:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while((ptr[v]++) < adj[v].size()) { ~~~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'int dinic(int)': main.cpp:84:33: warning: suggest parentheses around assignment used as truth value [-Wparentheses] while(pushed = dfs(source, INF)) flow += pushed; ^ main.cpp: In function 'int main()': main.cpp:92:35: 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); ^ main.cpp:93:37: 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); ^