Compilare: user.cpp: In function ‘int main()’: user.cpp:53:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < ladj[i].size() && r[ladj[i][j]]; j++); ^ user.cpp:54:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j == ladj[i].size()) { ^ user.cpp:71:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < radj[i].size() && l[radj[i][j]]; j++); ^ user.cpp:72:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j == radj[i].size()) { ^ user.cpp:18:21: warning: unused variable ‘k’ [-Wunused-variable] int n, m, i, j, k, a, b, min_deg; ^