Compilare: user.cpp: In function ‘int main()’: user.cpp:122:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(pozl+1<lin[l].size()&&pozc+1<col[c].size()-1){ ^ user.cpp:122:55: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(pozl+1<lin[l].size()&&pozc+1<col[c].size()-1){ ^ user.cpp:131:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poznewc+1<col[newc].size()-1&&poznewl+1<lin[newl].size()&&col[newc][poznewc+1]==lin[newl][poznewl+1]){ ^ user.cpp:131:71: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poznewc+1<col[newc].size()-1&&poznewl+1<lin[newl].size()&&col[newc][poznewc+1]==lin[newl][poznewl+1]){ ^ user.cpp:80:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cabana2.in","r",stdin); ^ user.cpp:81:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cabana2.out","w",stdout); ^ user.cpp:84:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:86:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&v[i].x,&v[i].y); ^