Compilare: user.cpp: In function ‘int main()’: user.cpp:8:59: warning: variable ‘nr1’ set but not used [-Wunused-but-set-variable] long long n,m,x,y,a[488][488],s1=0,s2=0,s3=0,s4=0,i,j,nr1=0,nr2=0,nr3=0,nr4=0,Max,Min; ^ user.cpp:8:65: warning: variable ‘nr2’ set but not used [-Wunused-but-set-variable] long long n,m,x,y,a[488][488],s1=0,s2=0,s3=0,s4=0,i,j,nr1=0,nr2=0,nr3=0,nr4=0,Max,Min; ^ user.cpp:8:71: warning: variable ‘nr3’ set but not used [-Wunused-but-set-variable] long long n,m,x,y,a[488][488],s1=0,s2=0,s3=0,s4=0,i,j,nr1=0,nr2=0,nr3=0,nr4=0,Max,Min; ^ user.cpp:8:77: warning: variable ‘nr4’ set but not used [-Wunused-but-set-variable] long long n,m,x,y,a[488][488],s1=0,s2=0,s3=0,s4=0,i,j,nr1=0,nr2=0,nr3=0,nr4=0,Max,Min; ^