1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
#include <iostream>

bool is_vovel(char c) {
    return c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u' || c == 'y';
}

int main() {
    std::string str;
    std::cin >> str;

    size_t add;
    bool found = false;
    size_t result = 0;
    for (size_t i = 2; i < str.size(); ++i) {
        if (is_vovel(str[i - 2]) == is_vovel(str[i - 1]) && is_vovel(str[i - 2]) == is_vovel(str[i])) {
            add = i - 1;
            found = true;
        }

        if (found) {
            result += add;
        }
    }

    std::cout << result << "\n";
}