Compilare: user.cpp: In function ‘void sub(std::vector<int>&, std::vector<int>&, int)’: user.cpp:17:9: warning: unused variable ‘i’ [-Wunused-variable] int i, T = 0; ^ user.cpp: In function ‘void SolveTestCase()’: user.cpp:35:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d %d", &N, &K ); ^ user.cpp: In function ‘int main(int, const char**)’: user.cpp:72:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "recurenta.in" , "r", stdin ); ^ user.cpp:73:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "recurenta.out", "w", stdout ); ^