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#include <iostream> #include <vector> #include <string> using namespace std; int main() { vector <char> a; for (int i = 0; i < n; i += 1) { cin >> a[i]; if (a[i] == 'A' || a[i] == 'O' || a[i] == 'Y' || a[i] == 'E' || a[i] == 'U' || a[i] == 'I') { a[i] = ' '; } if (a[i] >= 65 || a[i] <= 65 + 26) { a[i] -= 32; } } for (int i = 0; i < size(a); i++) { cout << "." << a[i]; } return 0; } //32