#include <stdio.h>
#include <ctype.h>

int is_valid_char(char ch) {
    return (isalpha(ch) || ch == ' ');
}

int is_vowel(char ch) {
    char lower = tolower(ch);
    return (lower == 'a' || lower == 'e' || lower == 'i' || lower == 'o' || lower == 'u');
}

int main() {
    char str[101];
    int i, valid = 1;

    printf(" ");
    fgets(str, sizeof(str), stdin);

    // Remove newline if present
    for (i = 0; str[i]; i++) {
        if (str[i] == '\n') {
            str[i] = '\0';
            break;
        }
    }

    // Validate and transform
    for (i = 0; str[i]; i++) {
        if (!is_valid_char(str[i])) {
            valid = 0;
            break;
        }
        if (is_vowel(str[i])) {
            str[i] = toupper(str[i]);
        }