Compilare: user.cpp: In function ‘int main()’: user.cpp:82:10: warning: unused variable ‘i’ [-Wunused-variable] long i, j; ^ user.cpp:82:13: warning: unused variable ‘j’ [-Wunused-variable] long i, j; ^ user.cpp:86:30: warning: unused variable ‘kb2’ [-Wunused-variable] long long ka1, ka2, kb1, kb2; ^ user.cpp:83:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tort.in", "r", stdin); ^ user.cpp:84:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tort.out", "w", stdout); ^ user.cpp:85:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld %lld", &A, &B); ^