aib->nodes gets modified before our print, save node i and j before
aib->nodes gets modified before our print, save node i and j before

erexhepa/vlfeat,erexhepa/vlfeat,hongzhili/vlfeat,qubick/vlfeat,erexhepa/vlfeat,erexhepa/vlfeat,j-bo/vlfeat,hongzhili/vlfeat,rxl194/vlfeat,vlfeat/vlfeat,qubick/vlfeat,erexhepa/vlfeat,CansenJIANG/vlfeat,cvfish/vlfeat,mylxiaoyi/vlfeat,mylxiaoyi/vlfeat,hongzhili/vlfeat,mylxiaoyi/vlfeat,richarddzh/vlfeat,j-bo/vlfeat,rxl194/vlfeat,rxl194/vlfeat,j-bo/vlfeat,vlfeat/vlfeat,mylxiaoyi/vlfeat,CansenJIANG/vlfeat,cvfish/vlfeat,j-bo/vlfeat,mylxiaoyi/vlfeat,richarddzh/vlfeat,richarddzh/vlfeat,cvfish/vlfeat,hongzhili/vlfeat,WangDequan/vlfeat,erexhepa/vlfeat,CansenJIANG/vlfeat,rxl194/vlfeat,qubick/vlfeat,WangDequan/vlfeat,WangDequan/vlfeat,WangDequan/vlfeat,cvfish/vlfeat,rxl194/vlfeat,rxl194/vlfeat,CansenJIANG/vlfeat,cvfish/vlfeat,mylxiaoyi/vlfeat,vlfeat/vlfeat,vlfeat/vlfeat,richarddzh/vlfeat,hongzhili/vlfeat,WangDequan/vlfeat,qubick/vlfeat,qubick/vlfeat,richarddzh/vlfeat,WangDequan/vlfeat,CansenJIANG/vlfeat,qubick/vlfeat,richarddzh/vlfeat,j-bo/vlfeat,hongzhili/vlfeat,CansenJIANG/vlfeat,cvfish/vlfeat,vlfeat/vlfeat,vlfeat/vlfeat