Compilare: user.cpp: In function ‘int main()’: user.cpp:9:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define FOR(i,s,d) for(i=(s);i<(d);++i) ^ user.cpp:40:13: note: in expansion of macro ‘FOR’ FOR(j,0,P[i].sz-1) ^ user.cpp:19:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("magazin.in","r",stdin); ^ user.cpp:20:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("magazin.out","w",stdout); ^ user.cpp:22:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d",&p,&n,&m,&D); ^ user.cpp:25:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&i,&j); ^