1 #include<stdio.h>
 2 #include<string.h>
 3 #include<iostream>
 4 #include<ctype.h>
 5 using namespace std;
 6
 7 bool check_sentences(char ch)
 8 {
 9     if(ch == '.' || ch == '?' || ch == ':' || ch == ';' || ch == '!')
10         return true;
11     return false;
12 }
13
14 bool check_syllables(char ch)
15 {
16     if(ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u' || ch == 'y'
17     || ch == 'A' || ch == 'E' || ch == 'I' || ch == 'O' || ch == 'U' || ch == 'Y')
18         return true;
19     return false;
20
21 }
22
23 int main()
24 {
25     int sentences = 0;//句子数
26     int words = 0;//单词数
27     int syllables = 0;//音节数
28     int len,i;
29     char s[50];
30
31     while(cin>>s)
32     {
33         len = strlen(s);
34
35         if(check_sentences(s[len-1]))
36             sentences++;
37
38         words++;
39
40         while(!isalpha(s[len-1]))
41             len--;
42
43         if(len <= 3)
44             syllables++;//单词长度<=3时，音节数加1
45         else
46         {
47             if(check_syllables(s[0])) syllables++;
48
49             for(i = 1; i < len; i++)
50             {
51                 if(check_syllables(s[i]) && !check_syllables(s[i-1]))
52                     syllables++;
53             }
54             //去除以 -es -ed -e(除-le)结尾的情况
55             if(!check_syllables(s[len-3]) && s[len-2] == 'e' && (s[len-1] == 's'|| s[len-1] == 'd'))
56                 syllables--;
57             if(!check_syllables(s[len-2]) && s[len-1] == 'e' && s[len-2] != 'l')
58                 syllables--;
59         }
60     }
61     double ans;
62     ans = 206.835-1.015*(words*1.0/sentences)-84.6*(syllables*1.0/words);
63     printf("%.2lf\n",ans);
64     return 0;
65 }