Compilare: user.cpp: In function ‘int main()’: user.cpp:88:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(gr=1;gr<vx.size();gr++){ ^ user.cpp:109:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(step <= vx.size()) step <<= 1; ^ user.cpp:111:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cbGroup+step < vx.size()){ ^ user.cpp:118:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(step <= group[cbGroup].size()) step <<= 1; ^ user.cpp:120:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(step+pos < group[cbGroup].size()){ ^ user.cpp:66:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("poligon.in","r",stdin); ^ user.cpp:67:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("poligon.out","w",stdout); ^ user.cpp:69:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld %ld",&n,&m); ^ user.cpp:71:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf %lf",&aux.x,&aux.y); ^ user.cpp:102:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf %lf",&aux.x,&aux.y); ^