Compilare: user.cpp: In function ‘bool bellman(int)’: user.cpp:24:34: warning: overflow in implicit constant conversion [-Woverflow] for (int i=1;i<=n;i++)best[i]=INF,boss[i]=0; ^ user.cpp: In function ‘int main()’: user.cpp:7:13: warning: overflow in implicit constant conversion [-Woverflow] #define INF 0x3f3f3f3f3f ^ user.cpp:58:20: note: in expansion of macro ‘INF’ int maxflow=INF; ^ user.cpp:44:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fmcm.in","r",stdin); ^ user.cpp:45:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fmcm.out","w",stdout); ^ user.cpp:46:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d",&n,&m,&surs,&dest); ^ user.cpp:49:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d",&x,&y,&z,&c); ^