Compilare: user.cpp: In function ‘int get_deep(int)’: user.cpp:29:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp:30:9: warning: unused variable ‘best’ [-Wunused-variable] int best; ^ user.cpp: In function ‘void check(int)’: user.cpp:48:12: warning: variable ‘R’ set but not used [-Wunused-but-set-variable] int i, R; ^ user.cpp: In function ‘void check2(int, int)’: user.cpp:68:12: warning: variable ‘R’ set but not used [-Wunused-but-set-variable] int i, R; ^ user.cpp: In function ‘int main()’: user.cpp:93:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apdm.in","r",stdin); ^ user.cpp:94:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apdm.out","w",stdout); ^ user.cpp:96:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:98:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^