Compilare: user.cpp: In function ‘void cicle(int, int, int&, int&, int&, int&)’: user.cpp:18:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[node].size();i++) ^ user.cpp:26:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<t[node].size();i++) ^ user.cpp: In function ‘void write(int, int, int, int*, int*)’: user.cpp:41:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[a[i]].size();j++) ^ user.cpp:43:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<t[b[i]].size();j++) ^ user.cpp: In function ‘void read()’: user.cpp:65:31: warning: unused variable ‘j’ [-Wunused-variable] int n,i,a[10001],b[10001],j; ^