Compilare: user.cpp: In function ‘int main()’: user.cpp:44:12: warning: unused variable ‘j’ [-Wunused-variable] {int n,m,i,j,gr[maxn],a,b,d,sum=0,nr=0; ^ user.cpp:44:23: warning: unused variable ‘a’ [-Wunused-variable] {int n,m,i,j,gr[maxn],a,b,d,sum=0,nr=0; ^ user.cpp:44:25: warning: unused variable ‘b’ [-Wunused-variable] {int n,m,i,j,gr[maxn],a,b,d,sum=0,nr=0; ^ user.cpp:44:27: warning: unused variable ‘d’ [-Wunused-variable] {int n,m,i,j,gr[maxn],a,b,d,sum=0,nr=0; ^