Compilare: user.cpp: In function ‘void SolveTestCase()’: user.cpp:59:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int N; scanf( "%d", &N ); ^ user.cpp: In function ‘int main(int, const char**)’: user.cpp:129:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "grazing.in" , "r", stdin ); ^ user.cpp:130:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "grazing.out", "w", stdout ); ^