Borderou de evaluare (job #476919)

Eroare de compilare: user.cpp:2:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas] user.cpp:3:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas] user.cpp:1:27: error: attribute(target("avx2")) is unknown user.cpp: In function 'int main()': user.cpp:31:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:12:30: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:13:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]