using System;
using System.Collections.Generic;
using System.Linq;

class Solution {
    /**
     * 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可
     *
     * 
     * @param prices int整型一维数组 
     * @return int整型
     */
    public int maxProfit (List<int> prices) {
        int curmin = prices[0];
        int max = 0;
        for(int i = 1; i < prices.Count; i++){
            curmin = Math.Min(curmin, prices[i]);
            max = Math.Max(max, prices[i] - curmin);
        }
        return max;
    }
}