Compilare: user.cpp: In function ‘int main()’: user.cpp:156:9: warning: unused variable ‘a’ [-Wunused-variable] int a, b, t, m; ^ user.cpp:156:12: warning: unused variable ‘b’ [-Wunused-variable] int a, b, t, m; ^ user.cpp:156:15: warning: unused variable ‘t’ [-Wunused-variable] int a, b, t, m; ^ user.cpp:153:46: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cumainilecurate.in", "r", stdin); ^ user.cpp:154:48: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cumainilecurate.out", "w", stdout); ^ user.cpp: In function ‘int Query(int)’: user.cpp:146:36: warning: ‘val’ may be used uninitialized in this function [-Wmaybe-uninitialized] poz = B[bi].getNext(val + 1); ^