还是用状态机
从i = 1开始(因为i=0不能卖)
s0[i] = max(s0[i-1], s2[i-1]);
s1[i] = max(s1[i-1], s0[i-1]-prices[i]);
s2[i] =s1[i-1]+ prices[i];
还是用状态机
从i = 1开始(因为i=0不能卖)
s0[i] = max(s0[i-1], s2[i-1]);
s1[i] = max(s1[i-1], s0[i-1]-prices[i]);
s2[i] =s1[i-1]+ prices[i];