两个人轮流拿10个硬币，每次可拿1，2，4个，拿到最后一个的为输，问有无必胜条件？
Jeff and Diamond like playing game of coins,One day they
designed a new set of rules:
1)Totally 10 coins
2)One can take away 1,2or 4 coins at one time by turns
3)Who takes the last loses.
Given these rules Whether the winning status is pre-determined or not
