Compilare: user.cpp: In function ‘int main()’: user.cpp:11:21: warning: unused variable ‘j’ [-Wunused-variable] long long p,k,i,j,mi,dr,lu=0,cost=0,dif,val; ^ user.cpp:11:23: warning: unused variable ‘mi’ [-Wunused-variable] long long p,k,i,j,mi,dr,lu=0,cost=0,dif,val; ^ user.cpp:11:26: warning: unused variable ‘dr’ [-Wunused-variable] long long p,k,i,j,mi,dr,lu=0,cost=0,dif,val; ^ user.cpp:11:29: warning: unused variable ‘lu’ [-Wunused-variable] long long p,k,i,j,mi,dr,lu=0,cost=0,dif,val; ^ user.cpp:11:41: warning: unused variable ‘dif’ [-Wunused-variable] long long p,k,i,j,mi,dr,lu=0,cost=0,dif,val; ^ user.cpp:9:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lss.in","r",stdin); ^ user.cpp:10:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lss.out","w",stdout); ^