Compilare: main.cpp: In function 'int main()': main.cpp:11:45: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ( "furnicik.in" , "r" , stdin ) ; ^ main.cpp:12:47: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ( "furnicik.out" , "w" , stdout ) ; ^ main.cpp:16:48: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ( "%lld%lld%lld" , & n , & l , & t ) ; ^ main.cpp:20:42: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ( "%lld%lld" , & x , & y ) ; ^