Compilare: user.cpp: In function ‘void LetsMakeTask3()’: user.cpp:139:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(Answer[i].size() == Task2) ^ user.cpp: In function ‘int main()’: user.cpp:146:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cerc3.in" , "r" , stdin); ^ user.cpp:147:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cerc3.out" , "w" , stdout); ^ user.cpp: In function ‘void Read()’: user.cpp:33:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &N); ^ user.cpp:37:63: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d" , &Cerc[i].x , &Cerc[i].y , &Cerc[i].r); ^