Compilare: user.cpp: In function ‘void getMax2DSubArray(long long int (*)[2009], int, int)’: user.cpp:26:7: warning: variable ‘start2’ set but not used [-Wunused-but-set-variable] int start2=0,start3=0,start4=0; ^ user.cpp:26:25: warning: variable ‘start4’ set but not used [-Wunused-but-set-variable] int start2=0,start3=0,start4=0; ^ user.cpp:27:7: warning: variable ‘end2’ set but not used [-Wunused-but-set-variable] int end2=0,end3=0,end4=0; ^ user.cpp:27:21: warning: variable ‘end4’ set but not used [-Wunused-but-set-variable] int end2=0,end3=0,end4=0; ^