Compilare: user.cpp: In function ‘void SolveTestCase()’: user.cpp:9:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int N, K; scanf( "%d %d", &N, &K ); N <<= 1; std::vector<long long> Cnt( (N >> 1) + 1 ); ^ user.cpp: In function ‘int main(int, const char**)’: user.cpp:34:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "mugur.in" , "r", stdin ); ^ user.cpp:35:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "mugur.out", "w", stdout ); ^