Compilare: user.cpp: In function ‘int main()’: user.cpp:22:30: warning: operation on ‘m’ may be undefined [-Wsequence-point] b[++m]=b[m-1]+k-1; ^ user.cpp:27:27: warning: operation on ‘m’ may be undefined [-Wsequence-point] if (k) b[++m]=k+b[m-1]; ^ user.cpp:31:14: warning: unused variable ‘l’ [-Wunused-variable] int rs=0,l,r,mij,target=n/2+1; ^ user.cpp:31:16: warning: unused variable ‘r’ [-Wunused-variable] int rs=0,l,r,mij,target=n/2+1; ^ user.cpp:31:18: warning: unused variable ‘mij’ [-Wunused-variable] int rs=0,l,r,mij,target=n/2+1; ^