Compilare: user.cpp: In function ‘void Update1(int, int, int)’: user.cpp:47:9: warning: unused variable ‘k’ [-Wunused-variable] int k=mod(L-cage),k2=mod((L+R)/2+1-cage); ^ user.cpp:47:23: 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:83:9: warning: unused variable ‘k’ [-Wunused-variable] int k=mod(L-cage),k2=mod((L+R)/2+1-cage); ^ user.cpp:83:23: 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:168:13: warning: unused variable ‘val’ [-Wunused-variable] int val=0; ^ user.cpp:159:10: warning: unused variable ‘ch’ [-Wunused-variable] char ch; ^ user.cpp:164:9: warning: unused variable ‘j’ [-Wunused-variable] int j=0; ^ user.cpp:157:37: 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); ^