Compilare: user.cpp: In function ‘int main()’: user.cpp:28:21: warning: integer overflow in expression [-Woverflow] #define INF (1<<31)-1 ^ user.cpp:53:33: note: in expansion of macro ‘INF’ for (i=1;i<=N;i++) minim[i]=INF; ^ user.cpp:28:21: warning: integer overflow in expression [-Woverflow] #define INF (1<<31)-1 ^ user.cpp:57:33: note: in expansion of macro ‘INF’ for (i=1;i<=N;i++) D[i]=INF; ^ user.cpp:28:21: warning: integer overflow in expression [-Woverflow] #define INF (1<<31)-1 ^ user.cpp:77:55: note: in expansion of macro ‘INF’ for (i=1;i<=N;i++) if (D[i]<minim[i] && D[i]!=INF) minim[i]=D[i],sol[i]=source; ^ user.cpp:42:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("catun.in","r",stdin); ^ user.cpp:43:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("catun.out","w",stdout); ^ user.cpp:44:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&N,&M,&K); ^ user.cpp:45:46: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (i=1;i<=K;i++) scanf("%d",&catune[i]); ^ user.cpp:49:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&x,&y,&z); ^