Compilare: user.cpp:3:0: warning: "MAXLONG" redefined [enabled by default] #define MAXLONG 1000000000 ^ In file included from user.cpp:2:0: /usr/include/values.h:46:0: note: this is the location of the previous definition #define MAXLONG LONG_MAX ^ user.cpp: In function ‘int main()’: user.cpp:37:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (nod2=nod1+1,i1=1;i1<=apa[i];i1++,nod2=nod2+2) ^ user.cpp:39:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (cost[nod1][nod2]>1000000-100*(nod2-nod1)+i1) ^ user.cpp:42:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (cost[nod1][nod2+1]>1000000-100*(nod2-nod1+1)+i1) ^ user.cpp:11:19: warning: unused variable ‘cx’ [-Wunused-variable] int n,k,j,i,x,cx,i1,nod1,nod2,y,p,v; ^ user.cpp:61:15: warning: ‘v’ may be used uninitialized in this function [-Wmaybe-uninitialized] M[v]=1; ^