Compilare: user.cpp: In function ‘void Update1(int, int, int)’: user.cpp:53:9: warning: unused variable ‘k’ [-Wunused-variable] int k=mod(L-cage),k2=mod((L+R)/2+1-cage); ^ user.cpp:53:23: warning: unused variable ‘k2’ [-Wunused-variable] int k=mod(L-cage),k2=mod((L+R)/2+1-cage); ^ user.cpp: In function ‘void Update2(int, int, int)’: user.cpp:95:9: warning: unused variable ‘k’ [-Wunused-variable] int k=mod(L-cage),k2=mod((L+R)/2+1-cage); ^ user.cpp:95:23: warning: unused variable ‘k2’ [-Wunused-variable] int k=mod(L-cage),k2=mod((L+R)/2+1-cage); ^ user.cpp: In function ‘int main()’: user.cpp:183:13: warning: unused variable ‘val’ [-Wunused-variable] int val=0; ^ user.cpp:176:10: warning: unused variable ‘ch’ [-Wunused-variable] char ch; ^ user.cpp:179:9: warning: unused variable ‘j’ [-Wunused-variable] int j=0; ^ user.cpp:174:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("flower.out","w",stdout); ^