Compilare: user.cpp: In function ‘int main()’: user.cpp:75:9: warning: unused variable ‘i’ [-Wunused-variable] int t, i; ^ user.cpp: In function ‘void solve()’: user.cpp:32:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld %lld", &A, &B); ^ user.cpp: In function ‘int main()’: user.cpp:73:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pinex.in", "r", stdin); ^ user.cpp:74:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pinex.out", "w", stdout); ^ user.cpp:78:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^