prob36

#include <iostream>
#include <fstream>
#include <string>
#include <cctype>

bool isVowel(char c) {
    if(c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u')
        return true;
    else
        return false;
}

int main() {
    std::ifstream in("strings.txt");
    std::string str;
    size_t total = 0;
    while(std::getline(in,str)) {
        int vowel = 0;
        int digit = 0;
        int alnum = 0;
        bool passes = true;
        for(auto& i : str) {
            if(i == 'q' || i == 'b') {
                passes = false;
                break;
            }
            if(isVowel(i))
                ++vowel;
            if(std::isdigit(i))
                ++digit;
            if(!std::isalnum(i))
                ++alnum;
        }
        if((vowel % 2 == 0) && (digit >= 3) && (alnum <= 3) && passes) {
            std::cout << str << '\n';
            ++total;
        }
    }
    std::cout << total;
}