Compilare: user.cpp: In function ‘int aria(int, int, int, int)’: user.cpp:21:33: warning: variable ‘p’ set but not used [-Wunused-but-set-variable] int l1=i2-i1+1, l2=j2-j1+1, p; ^ user.cpp: In function ‘int main()’: user.cpp:52:70: warning: ‘l2max’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(v[i].i2-v[i].i1+1<=l1max-2 && v[i].j2-v[i].j1+1<=l2max-2) ^ user.cpp:38:33: warning: ‘l1max’ may be used uninitialized in this function [-Wmaybe-uninitialized] int i, mx=0, i1, i2, j1, j2,l1max, l2max, j; ^