Problem of Hint$V_{G}$ should be {1, 2, 3, 4, 5} instead of {1, 2, 3, 4}
Thus $G'$ should be {{1, 2, 3, 4, 5}, {(1, 2), (2, 3), (3, 4)}}SDU_PCA at 2016-10-06 16:08:49
RE:Problem of Hintsorry, G' should be {{1, 2, 3, 4, 5}, {(1, 2), (2, 3)}}SDU_PCA at 2016-10-06 16:09:25