Compilare: user.cpp: In function ‘long long int dubitza_lu_kush(int)’: user.cpp:10:15: warning: unused variable ‘k’ [-Wunused-variable] int i, j, k; ^ user.cpp: In function ‘int main()’: user.cpp:42:18: warning: unused variable ‘j’ [-Wunused-variable] int p, q, i, j; ^ user.cpp:39:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "zero.in", "r", stdin ); ^ user.cpp:40:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "zero.out", "w", stdout ); ^ user.cpp:45:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d%d%d%d", &n, &b, &p, &q ); ^