#include <iostream> #include <algorithm> #include <vector> #include <string> bool isVowel(char c) { switch (c) { case 'a': case 'e': case 'i': case 'o': case 'u': case 'y': return true; default: return false; } } using namespace std; int main() { ios_base::sync_with_stdio(false); string str; cin >> str; vector<long long> vec(str.size()); long long prev = 0; for (long long k = 2; k < str.size(); ++k) { vec[k] = vec[k-1]; if (isVowel(str[k]) == isVowel(str[k - 1]) && isVowel(str[k]) == isVowel(str[k - 2])) { vec[k] += k - 1; prev = k - 2; } else if (vec[k]) { vec[k] += prev + 1; } } cout << vec.back() << endl; 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 37 38 39 40 41 | #include <iostream> #include <algorithm> #include <vector> #include <string> bool isVowel(char c) { switch (c) { case 'a': case 'e': case 'i': case 'o': case 'u': case 'y': return true; default: return false; } } using namespace std; int main() { ios_base::sync_with_stdio(false); string str; cin >> str; vector<long long> vec(str.size()); long long prev = 0; for (long long k = 2; k < str.size(); ++k) { vec[k] = vec[k-1]; if (isVowel(str[k]) == isVowel(str[k - 1]) && isVowel(str[k]) == isVowel(str[k - 2])) { vec[k] += k - 1; prev = k - 2; } else if (vec[k]) { vec[k] += prev + 1; } } cout << vec.back() << endl; return 0; } |