Compilare: user.cpp: In function ‘int update(int, int, int, int, int, int)’: user.cpp:16:13: warning: variable ‘value1’ set but not used [-Wunused-but-set-variable] int value1 = -INF; ^ user.cpp:17:13: warning: variable ‘value2’ set but not used [-Wunused-but-set-variable] int value2 = -INF; ^ user.cpp: In function ‘int main()’: user.cpp:52:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("arbint.in" ,"r", stdin ); ^ user.cpp:53:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("arbint.out","w", stdout); ^ user.cpp:55:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d", &N, &M); ^ user.cpp:59:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &X); ^ user.cpp:65:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d", &cod, &X, &Y); ^