Compilare: user.cpp: In function ‘int main()’: user.cpp:33:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<=v[nod].size()-1;i++){ ~^~~~~~~~~~~~~~~~~ user.cpp:12:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, x, y, z, front, back, n, m, d, nodcurent, nod, distanta; ^ user.cpp:12:24: warning: unused variable ‘front’ [-Wunused-variable] int i, j, x, y, z, front, back, n, m, d, nodcurent, nod, distanta; ^~~~~ user.cpp:12:31: warning: unused variable ‘back’ [-Wunused-variable] int i, j, x, y, z, front, back, n, m, d, nodcurent, nod, distanta; ^~~~ user.cpp:17:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d", &n, &m); ^ user.cpp:19:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d", &x, &y, &z); ^