Compilare: main.cpp: In function 'int binarySearch(int, vi&)': main.cpp:70:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] int m = l + r >> 1; ~~^~~ main.cpp: In member function 'bool Dinic::bfs()': main.cpp:108:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int it = 0; it < q.size() && h[D] == -1; ++it) { ~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:14:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] #define FO(x) {freopen(#x".in","r",stdin);freopen(#x".out","w",stdout);} ^ main.cpp:158:9: note: in expansion of macro 'FO' FO(maxflow); ^~ main.cpp:14:71: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] #define FO(x) {freopen(#x".in","r",stdin);freopen(#x".out","w",stdout);} ^ main.cpp:158:9: note: in expansion of macro 'FO' FO(maxflow); ^~