#include <iostream>
#include <string>
using namespace std;
inline bool is_vowel(char c) {
return (c == 'a') || (c == 'e') || (c == 'i') ||
(c == 'o') || (c == 'u') || (c == 'y');
}
int main() {
ios::sync_with_stdio(0);
string input;
cin >> input;
int n = input.length();
unsigned long long ret = 0;
int first_left = n - 2;
bool vowel2 = is_vowel(input[n - 1]);
bool vowel1 = is_vowel(input[n - 2]);
for (int i = n - 3; i >= 0; --i) {
bool vowel0 = is_vowel(input[i]);
if (vowel0 == vowel1 && vowel0 == vowel2) {
first_left = i;
}
ret += n - first_left - 2;
vowel2 = vowel1;
vowel1 = vowel0;
}
cout << ret;
return 0;
}
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 27 28 29 30 31 32 33 34 35 36 | #include <iostream> #include <string> using namespace std; inline bool is_vowel(char c) { return (c == 'a') || (c == 'e') || (c == 'i') || (c == 'o') || (c == 'u') || (c == 'y'); } int main() { ios::sync_with_stdio(0); string input; cin >> input; int n = input.length(); unsigned long long ret = 0; int first_left = n - 2; bool vowel2 = is_vowel(input[n - 1]); bool vowel1 = is_vowel(input[n - 2]); for (int i = n - 3; i >= 0; --i) { bool vowel0 = is_vowel(input[i]); if (vowel0 == vowel1 && vowel0 == vowel2) { first_left = i; } ret += n - first_left - 2; vowel2 = vowel1; vowel1 = vowel0; } cout << ret; return 0; } |
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