Compilare: user.cpp: In function ‘int main()’: user.cpp:9:48: warning: variable ‘nr’ set but not used [-Wunused-but-set-variable] int n,m,i,j,a[488][488],s=0,s2=0,s3=0,s4=0,nr=0,nr2=0,nr3=0,nr4=0,x,y,Max; ^ user.cpp:9:53: warning: variable ‘nr2’ set but not used [-Wunused-but-set-variable] int n,m,i,j,a[488][488],s=0,s2=0,s3=0,s4=0,nr=0,nr2=0,nr3=0,nr4=0,x,y,Max; ^ user.cpp:9:59: warning: variable ‘nr3’ set but not used [-Wunused-but-set-variable] int n,m,i,j,a[488][488],s=0,s2=0,s3=0,s4=0,nr=0,nr2=0,nr3=0,nr4=0,x,y,Max; ^ user.cpp:9:65: warning: variable ‘nr4’ set but not used [-Wunused-but-set-variable] int n,m,i,j,a[488][488],s=0,s2=0,s3=0,s4=0,nr=0,nr2=0,nr3=0,nr4=0,x,y,Max; ^