Compilare: main.cpp: In function 'void read()': main.cpp:101:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("croco.in","r",stdin); ^ main.cpp:102:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d ",&n); ^ main.cpp:109:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d ",&x); ^ main.cpp:124:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("croco.out","w",stdout); ^ main.cpp:63:99: warning: 'final' may be used uninitialized in this function [-Wmaybe-uninitialized] int departe = send(source, sink, it.first,min(minflow,it.second - flow[nod][it.first])); ^ main.cpp:104:34: note: 'final' was declared here int kids = 0, ans = INT_MAX, final; ^~~~~