Compilare: user.cpp: In function ‘void baga()’: user.cpp:17:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<mp[f].size();i++) ~^~~~~~~~~~~~~ user.cpp:16:16: warning: unused variable ‘p’ [-Wunused-variable] int f=t%DM,p=0; ^ user.cpp: In function ‘void del()’: user.cpp:29:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<mp[f].size();i++) ~^~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:39:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("superpoligon.in","r",stdin); ^ user.cpp:40:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("superpoligon.out","w",stdout); ^ user.cpp:41:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&k,&M); ^ user.cpp:54:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a[i].x,&a[i].y); ^