又去Topcoder菜了一回

    好久没登陆 Topcoder Arena 了，上一次登陆是五月份，当时随ACM 协会去南师大比赛了一次，当时菜极了，什么都不会，连 iterator、vector都不会，看着简单的杂题和01背包问题，只能眼巴巴提交不成功0分归来……当时连挑刺都不会呀……

    今没事干，安装了 Arena ，做了一题练习题2001-R1-prob01-250，250分的，却值得了 76.3……为什么呢？

        #include <iostream>
        #include <string>

        using namespace std;

        class HowEasy{
        public:
            int pointVal(string problemStatement)
            {
                int len, chars;
                int lengthsSum = 0, wordsNum = 0;
                int i = 0, level;
               
                problemStatement += ' ';
                while(i < problemStatement.size())
                {
                    len = chars = 0;
                    while(i < problemStatement.size())
                    {
                        if (problemStatement[i] == ' ')
                        {
                            if (chars < 2)
                            {
                                lengthsSum += len;
                                break;
                            }
                        }
                        if ((problemStatement[i] >= 'a' && problemStatement[i] <= 'z') ||
                            (problemStatement[i] >= 'A' && problemStatement[i] <= 'Z'))
                        {
                            len++;
                        }
                        else
                        {
                            chars++;
                        }
                        i++;
                    }
                    i++;
                    wordsNum++;
                }
                switch(lengthsSum / wordsNum)
                {
                case 0:
                case 1:
                case 2: level = 1; break;
                case 3:
                case 4:
                case 5: level = 2; break;
                default: level = 4; break;
                }
                return level * 250;
            }
        };