Compilare: user.cpp: In function ‘int main()’: user.cpp:47:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (cost[nod1][nod2]>1000000-100*(nod2-nod1)+i1) ^ user.cpp:50:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (cost[nod1][nod2+1]>1000000-100*(nod2-nod1+1)+i1) ^ user.cpp:13:16: warning: unused variable ‘cx’ [-Wunused-variable] int n,k,j,i,x,cx,i1,nod1,nod2,y,p,v; ^ user.cpp:84:9: warning: ‘v’ may be used uninitialized in this function [-Wmaybe-uninitialized] c[v]=0; ^